3:I[9275,[],""] 5:I[1343,[],""] 6:I[4080,["51","static/chunks/795d4814-03346c8d233b4adb.js","212","static/chunks/212-70508e17017a12c2.js","231","static/chunks/231-5dc9f3acdba63b0c.js","54","static/chunks/54-f848f8ba1c362ca7.js","180","static/chunks/180-0fe2b7488d45d26a.js","185","static/chunks/app/layout-912b3c3a6fc60489.js"],""] 7:I[231,["51","static/chunks/795d4814-03346c8d233b4adb.js","212","static/chunks/212-70508e17017a12c2.js","231","static/chunks/231-5dc9f3acdba63b0c.js","54","static/chunks/54-f848f8ba1c362ca7.js","23","static/chunks/app/advice/%5Bid%5D/page-2c9c2b8245971fa7.js"],""] 8:I[212,["51","static/chunks/795d4814-03346c8d233b4adb.js","212","static/chunks/212-70508e17017a12c2.js","231","static/chunks/231-5dc9f3acdba63b0c.js","54","static/chunks/54-f848f8ba1c362ca7.js","23","static/chunks/app/advice/%5Bid%5D/page-2c9c2b8245971fa7.js"],"default"] 9:I[8629,["51","static/chunks/795d4814-03346c8d233b4adb.js","212","static/chunks/212-70508e17017a12c2.js","231","static/chunks/231-5dc9f3acdba63b0c.js","54","static/chunks/54-f848f8ba1c362ca7.js","180","static/chunks/180-0fe2b7488d45d26a.js","185","static/chunks/app/layout-912b3c3a6fc60489.js"],"SearchButton"] a:I[942,["51","static/chunks/795d4814-03346c8d233b4adb.js","212","static/chunks/212-70508e17017a12c2.js","231","static/chunks/231-5dc9f3acdba63b0c.js","54","static/chunks/54-f848f8ba1c362ca7.js","180","static/chunks/180-0fe2b7488d45d26a.js","185","static/chunks/app/layout-912b3c3a6fc60489.js"],"AdviserRegistrationButton"] b:I[390,["51","static/chunks/795d4814-03346c8d233b4adb.js","212","static/chunks/212-70508e17017a12c2.js","231","static/chunks/231-5dc9f3acdba63b0c.js","54","static/chunks/54-f848f8ba1c362ca7.js","180","static/chunks/180-0fe2b7488d45d26a.js","185","static/chunks/app/layout-912b3c3a6fc60489.js"],"ExamineeRegistrationButton"] c:I[8001,["51","static/chunks/795d4814-03346c8d233b4adb.js","212","static/chunks/212-70508e17017a12c2.js","231","static/chunks/231-5dc9f3acdba63b0c.js","54","static/chunks/54-f848f8ba1c362ca7.js","180","static/chunks/180-0fe2b7488d45d26a.js","185","static/chunks/app/layout-912b3c3a6fc60489.js"],"NavigationBarCategoryTabItem"] d:I[2738,["51","static/chunks/795d4814-03346c8d233b4adb.js","212","static/chunks/212-70508e17017a12c2.js","231","static/chunks/231-5dc9f3acdba63b0c.js","54","static/chunks/54-f848f8ba1c362ca7.js","180","static/chunks/180-0fe2b7488d45d26a.js","185","static/chunks/app/layout-912b3c3a6fc60489.js"],"ConsultingButton"] e:I[2362,["51","static/chunks/795d4814-03346c8d233b4adb.js","212","static/chunks/212-70508e17017a12c2.js","231","static/chunks/231-5dc9f3acdba63b0c.js","54","static/chunks/54-f848f8ba1c362ca7.js","180","static/chunks/180-0fe2b7488d45d26a.js","185","static/chunks/app/layout-912b3c3a6fc60489.js"],"default"] f:I[490,["51","static/chunks/795d4814-03346c8d233b4adb.js","212","static/chunks/212-70508e17017a12c2.js","231","static/chunks/231-5dc9f3acdba63b0c.js","54","static/chunks/54-f848f8ba1c362ca7.js","180","static/chunks/180-0fe2b7488d45d26a.js","185","static/chunks/app/layout-912b3c3a6fc60489.js"],"default"] 10:I[3578,["51","static/chunks/795d4814-03346c8d233b4adb.js","212","static/chunks/212-70508e17017a12c2.js","231","static/chunks/231-5dc9f3acdba63b0c.js","54","static/chunks/54-f848f8ba1c362ca7.js","180","static/chunks/180-0fe2b7488d45d26a.js","185","static/chunks/app/layout-912b3c3a6fc60489.js"],"default"] 11:I[4404,["51","static/chunks/795d4814-03346c8d233b4adb.js","212","static/chunks/212-70508e17017a12c2.js","231","static/chunks/231-5dc9f3acdba63b0c.js","54","static/chunks/54-f848f8ba1c362ca7.js","180","static/chunks/180-0fe2b7488d45d26a.js","185","static/chunks/app/layout-912b3c3a6fc60489.js"],"GoogleAnalytics"] 4:["id","j7ixaOa3AA6qP87WjHFd","d"] 0:["rokObjOcv5qQVn9FnWGF0",[[["",{"children":["advice",{"children":[["id","j7ixaOa3AA6qP87WjHFd","d"],{"children":["__PAGE__?{\"id\":\"j7ixaOa3AA6qP87WjHFd\"}",{}]}]}]},"$undefined","$undefined",true],["",{"children":["advice",{"children":[["id","j7ixaOa3AA6qP87WjHFd","d"],{"children":["__PAGE__",{},[["$L1","$L2"],null],null]},["$","$L3",null,{"parallelRouterKey":"children","segmentPath":["children","advice","children","$4","children"],"error":"$undefined","errorStyles":"$undefined","errorScripts":"$undefined","template":["$","$L5",null,{}],"templateStyles":"$undefined","templateScripts":"$undefined","notFound":"$undefined","notFoundStyles":"$undefined","styles":null}],null]},["$","$L3",null,{"parallelRouterKey":"children","segmentPath":["children","advice","children"],"error":"$undefined","errorStyles":"$undefined","errorScripts":"$undefined","template":["$","$L5",null,{}],"templateStyles":"$undefined","templateScripts":"$undefined","notFound":"$undefined","notFoundStyles":"$undefined","styles":null}],null]},[["$","html",null,{"lang":"ja","children":[["$","$L6",null,{"async":true,"src":"https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js?client=ca-pub-6167616270861177","crossOrigin":"anonymous"}],["$","$L6",null,{"async":true,"src":"https://securepubads.g.doubleclick.net/tag/js/gpt.js","crossOrigin":"anonymous"}],["$","$L6",null,{"id":"google-ad-manager","children":"\n window.googletag = window.googletag || {cmd: []};\n googletag.cmd.push(function() {\n googletag.defineSlot('/102643165/pc-under_title', ['fluid'], 'div-gpt-ad-1749012831201-0').addService(googletag.pubads());\n googletag.defineSlot('/102643165/unilink_web_under_advice', ['fluid'], 'div-gpt-ad-1749138434339-0').addService(googletag.pubads());\n googletag.pubads().enableSingleRequest();\n googletag.pubads().collapseEmptyDivs();\n googletag.enableServices();\n });\n "}],["$","body",null,{"className":"__className_e8ce0c","children":[["$","nav",null,{"className":"w-full bg-white text-white py-2","children":[["$","div",null,{"className":"relative h-16 mb-2","children":[["$","div",null,{"className":"absolute w-full flex items-center justify-center","children":["$","$L7",null,{"href":"/","children":["$","$L8",null,{"src":"/images/header.png","alt":"UniLinkヘッダー画像","width":200,"height":63}]}]}],["$","button",null,{"className":"absolute top-0 bottom-0 right-4 text-text","children":["$","$L9",null,{}]}]]}],["$","div",null,{"className":"flex justify-center space-x-2 mb-2","children":[["$","$La",null,{}],["$","$Lb",null,{}]]}],["$","div",null,{"className":"flex justify-center bg-primary","children":["$","div",null,{"className":"flex space-x-1 items-center overflow-x-auto hidden-scrollbar","children":[["$","$Lc","トップ",{"name":"トップ","selected":true}],["$","$Lc","現代文",{"name":"現代文","selected":false}],["$","$Lc","古・漢",{"name":"古・漢","selected":false}],["$","$Lc","数学",{"name":"数学","selected":false}],["$","$Lc","英語",{"name":"英語","selected":false}],["$","$Lc","理科",{"name":"理科","selected":false}],["$","$Lc","日本史",{"name":"日本史","selected":false}],["$","$Lc","世界史",{"name":"世界史","selected":false}],["$","$Lc","やる気",{"name":"やる気","selected":false}],["$","$Lc","時間",{"name":"時間","selected":false}],["$","$Lc","過去問",{"name":"過去問","selected":false}],["$","$Lc","模試",{"name":"模試","selected":false}],["$","$Lc","AO・小論",{"name":"AO・小論","selected":false}],["$","$Lc","ランキング",{"name":"ランキング","selected":false}]]}]}]]}],["$","$L3",null,{"parallelRouterKey":"children","segmentPath":["children"],"error":"$undefined","errorStyles":"$undefined","errorScripts":"$undefined","template":["$","$L5",null,{}],"templateStyles":"$undefined","templateScripts":"$undefined","notFound":["$","div",null,{"className":"px-4 py-4 text-center","children":[["$","h1",null,{"className":"text-4xl mb-4","children":"404"}],"指定されたページが見つかりませんでした。ページが削除または移動された可能性があります。"]}],"notFoundStyles":[],"styles":null}],["$","div",null,{"className":"fixed bottom-4 md:bottom-8 right-4 md:right-8 z-10","children":["$","$Ld",null,{}]}],["$","footer",null,{"className":"bg-gray-100","children":[["$","div",null,{"className":"px-4","children":["$","div",null,{"className":"max-w-5xl mx-auto w-full","children":[["$","$Le",null,{"sx":{"backgroundColor":"inherit","zIndex":1},"elevation":0,"children":[["$","$Lf",null,{"sx":{"paddingLeft":0,"paddingRight":0},"className":"font-semibold","expandIcon":["$","svg",null,{"stroke":"currentColor","fill":"currentColor","strokeWidth":"0","viewBox":"0 0 24 24","children":["$undefined",[["$","path","0",{"fill":"none","d":"M0 0h24v24H0V0z","children":[]}],["$","path","1",{"d":"M7.41 8.59 12 13.17l4.59-4.58L18 10l-6 6-6-6 1.41-1.41z","children":[]}]]],"className":"$undefined","style":{"color":"$undefined"},"height":"1em","width":"1em","xmlns":"http://www.w3.org/2000/svg"}],"children":"UniLink(ユニリンク)とは"}],["$","$L10",null,{"sx":{"paddingLeft":0,"paddingRight":0},"children":["$","div",null,{"className":"text-sm font-normal leading-relaxed","children":["UniLink(ユニリンク)とは、受験生会員数13万人以上、相談投稿数10万件以上を有する国内最大級のハイレベル受験質問プラットフォームです。",["$","br",null,{}],["$","br",null,{}],"全ての受験生が、受験の悩みや不安を無料で現役難関大生に質問できます。また、過去に投稿された全ての質問と回答を閲覧することもできます。",["$","br",null,{}],["$","br",null,{}],"質問に回答するすべての回答者は、学生証などを使用してUniLinkによって審査された東大・京大・慶應・早稲田・一橋・東工大・旧帝大のいずれかに所属する現役難関大生です。回答者の審査では、さらに実際の回答をUniLinkが確認して、一定の水準をクリアした合格者だけが登録できる仕組みとなっています。",["$","br",null,{}],["$","br",null,{}],"UniLink利用者の80%以上は、難関大学を志望する受験生です。ライバルから刺激を得て、合格者の知恵を1つでも多く吸収し、ハイレベルな受験対策を行いましょう。"]}]}]]}],["$","div",null,{"className":"border-b"}],["$","div",null,{"className":"py-4","children":[["$","div",null,{"className":"font-semibold","children":"UniLink公式SNSアカウント"}],["$","div",null,{"className":"text-sm font-normal leading-relaxed mb-2","children":"最新回答を短く要約してお届けします。"}],["$","div",null,{"children":["$","div",null,{"children":[["$","a",null,{"href":"https://twitter.com/unilink_study?ref_src=twsrc%5Etfw","className":"twitter-follow-button","data-show-count":"false","children":"@unilink_studyをフォロー"}],["$","$L6",null,{"async":true,"src":"https://platform.twitter.com/widgets.js"}]]}]}]]}],["$","div",null,{"className":"border-b"}],["$","div",null,{"className":"py-4","children":[["$","div",null,{"className":"font-semibold","children":"UniLink公式スマホアプリ"}],["$","div",null,{"children":["$","$L7",null,{"href":"https://unilink-app.onelink.me/isbO/iomezpbt","target":"_blank","children":["$","$L8",null,{"src":"/images/web_to_app_banner.jpg","width":3660,"height":1500,"sizes":"100vw","style":{"width":"100%","height":"auto"},"alt":"UniLink WebToAppバナー画像","className":"max-w-sm rounded"}]}]}]]}],["$","div",null,{"className":"border-b"}],["$","div",null,{"className":"flex flex-wrap items-center gap-4 py-4","children":[["$","$L7",null,{"className":"footer-button","href":"https://about.uni-link.co.jp/","children":"会社概要"}],["$","div",null,{"className":"footer-divider","children":"|"}],["$","$L7",null,{"className":"footer-button","href":"https://about.uni-link.co.jp/contact/","children":"お問い合わせ"}],["$","div",null,{"className":"footer-divider","children":"|"}],["$","$L7",null,{"className":"footer-button","href":"https://about.uni-link.co.jp/","children":"広告出稿"}],["$","div",null,{"className":"footer-divider","children":"|"}],["$","$L7",null,{"className":"footer-button","href":"https://about.uni-link.co.jp/documentdl/","children":"媒体資料ダウンロード"}],["$","div",null,{"className":"footer-divider","children":"|"}],["$","$L7",null,{"className":"footer-button","href":"https://about.uni-link.co.jp/terms/","children":"利用規約"}],["$","div",null,{"className":"footer-divider","children":"|"}],["$","$L7",null,{"className":"footer-button","href":"https://about.uni-link.co.jp/privacypolicy/","children":"プライバシーポリシー"}],["$","div",null,{"className":"footer-divider","children":"|"}],["$","$L7",null,{"className":"footer-button","href":"https://about.uni-link.co.jp/tokutei-law/","children":"特定商取引に関する表記"}],["$","div",null,{"className":"footer-divider","children":"|"}],["$","$L7",null,{"className":"footer-button","href":"/sitemap.xml","children":"サイトマップ"}]]}]]}]}],["$","div",null,{"className":"bg-primary px-4 pt-4 pb-20","children":["$","div",null,{"className":"max-w-5xl mx-auto w-full flex justify-between items-center","children":[["$","div",null,{"className":"rounded overflow-hidden","children":["$","$L7",null,{"href":"/","children":["$","$L8",null,{"src":"/images/header.png","alt":"UniLinkヘッダー画像","width":100,"height":32}]}]}],["$","div",null,{"className":"text-white text-sm","children":"©UniLink, Inc."}]]}]}]]}]]}],["$","$L11",null,{"gaId":"G-ELSR1M4E8Q"}]]}],null],null],[[["$","link","0",{"rel":"stylesheet","href":"/_next/static/css/5a4106e5f8f6bb49.css","precedence":"next","crossOrigin":"$undefined"}]],[null,"$L12"]]]]] 12:[["$","meta","0",{"name":"viewport","content":"width=device-width, initial-scale=1"}],["$","meta","1",{"charSet":"utf-8"}],["$","title","2",{"children":"三角比のcos(tan)がマイナスになる理由が分からない | UniLink"}],["$","meta","3",{"name":"description","content":"三角比は辺の比からθを求めるためのものだと思っていたのですが、単位円を書くとθ>90°の所のcosとtanはマイナスになります。辺の比なんだからマイナスになることはありえないのではないかと思ったのですが単位円は辺の比ではなく座標からsinθ,cosθ,tanθを求めてθを求めているのか、あるいはそもそも三角比は辺の比じゃないのか、どちらで理解すればよろしいでしょうか?"}],["$","link","4",{"rel":"icon","href":"/favicon.ico","type":"image/x-icon","sizes":"48x48"}],["$","link","5",{"rel":"icon","href":"/icon.png?2c0dc65a59843333","type":"image/png","sizes":"180x180"}],["$","link","6",{"rel":"apple-touch-icon","href":"/apple-icon.png?2c0dc65a59843333","type":"image/png","sizes":"180x180"}],["$","meta","7",{"name":"next-size-adjust"}]] 1:null 13:I[3903,["51","static/chunks/795d4814-03346c8d233b4adb.js","212","static/chunks/212-70508e17017a12c2.js","231","static/chunks/231-5dc9f3acdba63b0c.js","54","static/chunks/54-f848f8ba1c362ca7.js","23","static/chunks/app/advice/%5Bid%5D/page-2c9c2b8245971fa7.js"],"ClientInfo"] 14:I[2798,["51","static/chunks/795d4814-03346c8d233b4adb.js","212","static/chunks/212-70508e17017a12c2.js","231","static/chunks/231-5dc9f3acdba63b0c.js","54","static/chunks/54-f848f8ba1c362ca7.js","23","static/chunks/app/advice/%5Bid%5D/page-2c9c2b8245971fa7.js"],"AdUnderConsultation"] 15:I[2792,["51","static/chunks/795d4814-03346c8d233b4adb.js","212","static/chunks/212-70508e17017a12c2.js","231","static/chunks/231-5dc9f3acdba63b0c.js","54","static/chunks/54-f848f8ba1c362ca7.js","23","static/chunks/app/advice/%5Bid%5D/page-2c9c2b8245971fa7.js"],"ShowAllAdviceForSameConsulButton"] 16:I[2582,["51","static/chunks/795d4814-03346c8d233b4adb.js","212","static/chunks/212-70508e17017a12c2.js","231","static/chunks/231-5dc9f3acdba63b0c.js","54","static/chunks/54-f848f8ba1c362ca7.js","23","static/chunks/app/advice/%5Bid%5D/page-2c9c2b8245971fa7.js"],"AdviserInfo"] 17:I[9083,["51","static/chunks/795d4814-03346c8d233b4adb.js","212","static/chunks/212-70508e17017a12c2.js","231","static/chunks/231-5dc9f3acdba63b0c.js","54","static/chunks/54-f848f8ba1c362ca7.js","23","static/chunks/app/advice/%5Bid%5D/page-2c9c2b8245971fa7.js"],"AdviserProfile"] 18:I[7060,["51","static/chunks/795d4814-03346c8d233b4adb.js","212","static/chunks/212-70508e17017a12c2.js","231","static/chunks/231-5dc9f3acdba63b0c.js","54","static/chunks/54-f848f8ba1c362ca7.js","23","static/chunks/app/advice/%5Bid%5D/page-2c9c2b8245971fa7.js"],"AdUnderAdvice"] 19:I[3194,["51","static/chunks/795d4814-03346c8d233b4adb.js","212","static/chunks/212-70508e17017a12c2.js","231","static/chunks/231-5dc9f3acdba63b0c.js","54","static/chunks/54-f848f8ba1c362ca7.js","23","static/chunks/app/advice/%5Bid%5D/page-2c9c2b8245971fa7.js"],"CommentPostButton"] 1a:I[6411,["51","static/chunks/795d4814-03346c8d233b4adb.js","212","static/chunks/212-70508e17017a12c2.js","231","static/chunks/231-5dc9f3acdba63b0c.js","54","static/chunks/54-f848f8ba1c362ca7.js","23","static/chunks/app/advice/%5Bid%5D/page-2c9c2b8245971fa7.js"],"CommentItemAvatar"] 1b:I[6549,["51","static/chunks/795d4814-03346c8d233b4adb.js","212","static/chunks/212-70508e17017a12c2.js","231","static/chunks/231-5dc9f3acdba63b0c.js","54","static/chunks/54-f848f8ba1c362ca7.js","23","static/chunks/app/advice/%5Bid%5D/page-2c9c2b8245971fa7.js"],"CommentItemName"] 1d:I[3866,["51","static/chunks/795d4814-03346c8d233b4adb.js","212","static/chunks/212-70508e17017a12c2.js","231","static/chunks/231-5dc9f3acdba63b0c.js","54","static/chunks/54-f848f8ba1c362ca7.js","23","static/chunks/app/advice/%5Bid%5D/page-2c9c2b8245971fa7.js"],"AdOnAdviceList1"] 1c:Tf72,数学の応用問題を解くには二種類の力が必要です。 ㊀定石 公式等の理解 ㊁定石 公式等を使ってどう問題を解くか考える力 もし㊀ができていないと感じているならば チャートやその他の問題集を使って 分野別に勉強しましょう。 ㊀はできているならば 融合問題を解くことで 考える力を養いましょう。 もし融合問題が見つからないというならば Googleで 電数と調べてみてください。 各大学の過去問などが載っている 数学のサイトがあります。活用してみてください。 しかし”考える力”とはなんなのか 次の問題を解く際の僕の思考回路をお伝えしながら解いていこうと思います。 問題 Tan1°は有理数かどうか(2006年 京大) 僕の頭の中 ㊀「三角関数かー 確信はないけどおそらく無理数やろうなあ、、 背理法かなんかで証明すればええんかな、、?」 ここまでは誰でも閃きそうですね。 ㊁「有理数と無理数の話やから 分数うまく使って背理法やろうなぁ」 この発想は rute2の無理数証明での定石から思いつきます。 ㊂「tan=a/bでおいてもどうしようもないなあ。 cos=b/rute a2 b2になるだけやしなあ。」 この発想から逃れるのは少し難しいかもしれませんが、何度か試すと これじゃダメだと気づくはずです。 ㊃「ならどうやって分数の話に持ち込もうかな、、 あっ! tanの加法定理って分数じゃなかったっけ!」 これは日常的にしっかりとtanの加法定理を意識できているかどうかですね。 ㊄「じゃあどーせ背理法やし tan1°を有理数として 加法定理使ってみよかな。 tan(1-0)=tan1-tan0/1-tan1tan0=tan1 あれ 元に戻ってもた。」 ここでのポイントはtan1を有理数として背理法を使うことですが、これは㊁から明らかですよね。rute2=a/bっておいて背理法するでしょ? ㊅「次tan2はどうやろか tan2=tan(1 1)=tan1 tan1/1-tan1tan1 あれっ? tan1が有理数なら tan2も有理数になってもたぞ!?」 ここが最大のポイント! 整数の問題全般に言えることですが、方針がたちづらい時は 数を増やしたりして実験しましょう。 ∴例えば nが関わる問題なら n=1やn=2を代入してみるのです。 ㊆「tan3=tan(1 2)=... tan6=tan(3 3) これ続けてったらtan@全部有理数になんね? ってことはtan60も有理数なってまうやん!」 決定的な一打です。 ㊇「ならtan1が有理数ならtan60も有理数なるってこと示して終了やな!」 僕の思考回路を砕いて説明しました。 この問題は入試において有名な難問ですが、 所詮はこの程度です。 思考回路に特別なセンスが感じられるところありましたか? ないでしょう? 多くの定石を身につけていれば必然的にこのように解くことができるはずです。 自習で融合問題を解く際、わかってもわからなくても 自分で思考のフローチャートを書きながら解いてみてください。 もし問題が解けたなら 解答をみて 自分のフローチャートと見比べてみましょう。 問題が解けていないならば どこの発想が足りなかったのかしっかり分析しましょう。 長くなりましたが最後にまとめるならば 「この問題解けない! 解答みよ! 」だけはやめましょう。 「この問題 ここまではフローチャートかけたけど どうしてもここから進まない、、 解答みて どの思考が足りなかったか確認しよう、」 こうしましょう。 まだまだ時間はあるので 頑張ってください!1e:Tf02,センター試験の集合は、実数の集合を扱うことが多いため、数直線上に図示するのが有効なことが多いです。 目盛の間隔を正確に図示する必要はなく、それぞれの端の大小と、黒丸白丸があっているかが重要です。(黒丸の場合はその点を含む、白丸の時はその点を含まないことを表します。不等号に=が入っているかどうかの違いとも言えます。) 例えば、 p: x>1 q:x≦2 のように与えられていた時、右向きの数直線上に左から1と2の点を書きます。 pについては、x>1(つまり「xは1より大きい」)であることから、先ほど書いた1の点に白丸を書き、そこから右上がりに少し直線を書き、そこから右向きに直線を伸ばします。新幹線のような形になります。この形は、1の点を含まないことを表すもので、白丸と同じ意味ですが、ぱっと見で分かるように両方使います。また、この線がpであることをどこかに書いておいてください。 qについては、x≦2(つまり「xは2以下」)であるので、2の点に黒丸を書き、そこから真下に少し直線を書き、左向きの直線を伸ばします。こちらは、電車のような形になります。この形は、2を含むことを表すもので、黒丸と同じ意味です。こちらの線にも、qであることを書いておいてください。 このように、範囲を一つ一つ図示していくと、次のようになります。 _______________ p / 2 ---------○-----●------->x 1 | q --------------- これを見れば、「pかつq」や、「pまたはq」「p⇒q は真か偽か」はすぐに分かるはずです。たとえば「pかつq」なら、pとqが重なっているところなので、190°の所のcosとtanはマイナスになります。\n辺の比なんだからマイナスになることはありえないのではないかと思ったのですが単位円は辺の比ではなく座標からsinθ,cosθ,tanθを求めてθを求めているのか、あるいはそもそも三角比は辺の比じゃないのか、どちらで理解すればよろしいでしょうか?"]}]]}],["$","div",null,{"className":"pt-4","children":["$","$L14",null,{}]}],["$","div",null,{"className":"mt-4","children":["$","div",null,{"children":[["$","div",null,{"className":"flex items-center mb-2","children":[["$","svg",null,{"stroke":"currentColor","fill":"currentColor","strokeWidth":"0","viewBox":"0 0 24 24","className":"text-subPrimary mr-1","children":["$undefined",[["$","path","0",{"fill":"none","d":"M0 0h24v24H0V0z","children":[]}],["$","path","1",{"d":"M9 12c1.93 0 3.5-1.57 3.5-3.5S10.93 5 9 5 5.5 6.57 5.5 8.5 7.07 12 9 12zm0-5c.83 0 1.5.67 1.5 1.5S9.83 10 9 10s-1.5-.67-1.5-1.5S8.17 7 9 7zm.05 10H4.77c.99-.5 2.7-1 4.23-1 .11 0 .23.01.34.01.34-.73.93-1.33 1.64-1.81-.73-.13-1.42-.2-1.98-.2-2.34 0-7 1.17-7 3.5V19h7v-1.5c0-.17.02-.34.05-.5zm7.45-2.5c-1.84 0-5.5 1.01-5.5 3V19h11v-1.5c0-1.99-3.66-3-5.5-3zm1.21-1.82c.76-.43 1.29-1.24 1.29-2.18a2.5 2.5 0 0 0-5 0c0 .94.53 1.75 1.29 2.18.36.2.77.32 1.21.32s.85-.12 1.21-.32z","children":[]}]]],"style":{"color":"$undefined"},"height":20,"width":20,"xmlns":"http://www.w3.org/2000/svg"}],["$","div",null,{"className":"text-xs font-semibold","children":["この相談には",4,"件の回答があります"]}]]}],["$","div",null,{"className":"space-y-2","children":[["$","div",null,{"className":"rounded-lg border border-gray-300 px-3","children":["$","div",null,{"children":["$","$L7",null,{"href":"/advice/mNX0d12asKPUcgTprh8W","children":["$","div",null,{"className":"flex items-center py-4","children":[["$","div",null,{"className":"flex-1","children":[null,["$","div",null,{"className":"text-xs text-caption line-clamp-2 mb-1","children":"まず、三角比では、直角三角形を用いた定義を考えるのですが、0°<θ<90°での定義を考えると、単純に辺の比になります。(これはあなたがご存知の通りだと思います) \n\nしかし、90°より大きくなるとどうなるんだろう?という疑問が出てくるわけです。90°より大きいと直角三角形で考えることはできませんよね。\n\nそこで、単位円が出てくるわけです。単位円を用いることで、90°より大きい角に関しても考えられるようになるわけです。(この時にマイナスが出てくるわけです)\n\nこれらを踏まえて答えると、三角比が辺の比だから正というのは、あくまで0°から90°の時だけ。それ以外の時はこの考えは通用しません。\n\n単位円が優れているのは、辺の比で考えられる0°から90°を含むどんな角に対しても有効だということです。\n\nですから、数Ⅱで学ぶ三角関数を視野に入れると、「基本的に三角比は単位円で考えるものと考えておくもので、0°から90°という『特殊』な時は辺の比で考えることもできる」という意識でいると良いでしょう。\n\nあなたのご質問に回答するとき、誤魔化さない勉強は大事だと、筆者自身再認識出来ました。お互い精進していきましょう!!"}],["$","div",null,{"className":"flex mb-1","children":[["$","svg",null,{"stroke":"currentColor","fill":"currentColor","strokeWidth":"0","viewBox":"0 0 24 24","className":"text-subPrimary mr-1","children":["$undefined",[["$","path","0",{"fill":"none","d":"M0 0h24v24H0V0z","children":[]}],["$","path","1",{"d":"M12 6c1.1 0 2 .9 2 2s-.9 2-2 2-2-.9-2-2 .9-2 2-2m0 10c2.7 0 5.8 1.29 6 2H6c.23-.72 3.31-2 6-2m0-12C9.79 4 8 5.79 8 8s1.79 4 4 4 4-1.79 4-4-1.79-4-4-4zm0 10c-2.67 0-8 1.34-8 4v2h16v-2c0-2.66-5.33-4-8-4z","children":[]}]]],"style":{"color":"$undefined"},"height":16,"width":16,"xmlns":"http://www.w3.org/2000/svg"}],["$","div",null,{"className":"text-xs","children":["東京大学文科一類"," ","堅忍不抜"]}]]}],["$","div",null,{"className":"flex justify-between","children":[["$","div",null,{"className":"flex","children":[["$","svg",null,{"stroke":"currentColor","fill":"currentColor","strokeWidth":"0","viewBox":"0 0 24 24","className":"text-subPrimary mr-1","children":["$undefined",[["$","path","0",{"fill":"none","d":"M0 0h24v24H0z","children":[]}],["$","path","1",{"d":"M16.5 6v11.5c0 2.21-1.79 4-4 4s-4-1.79-4-4V5a2.5 2.5 0 0 1 5 0v10.5c0 .55-.45 1-1 1s-1-.45-1-1V6H10v9.5a2.5 2.5 0 0 0 5 0V5c0-2.21-1.79-4-4-4S7 2.79 7 5v12.5c0 3.04 2.46 5.5 5.5 5.5s5.5-2.46 5.5-5.5V6h-1.5z","children":[]}]]],"style":{"color":"$undefined"},"height":16,"width":16,"xmlns":"http://www.w3.org/2000/svg"}],["$","div",null,{"className":"text-xs mr-2","children":0}],["$","svg",null,{"stroke":"currentColor","fill":"currentColor","strokeWidth":"0","viewBox":"0 0 24 24","className":"text-subPrimary mr-1","children":["$undefined",[["$","path","0",{"fill":"none","d":"M0 0h24v24H0z","children":[]}],["$","path","1",{"d":"M16.5 3c-1.74 0-3.41.81-4.5 2.09C10.91 3.81 9.24 3 7.5 3 4.42 3 2 5.42 2 8.5c0 3.78 3.4 6.86 8.55 11.54L12 21.35l1.45-1.32C18.6 15.36 22 12.28 22 8.5 22 5.42 19.58 3 16.5 3zm-4.4 15.55-.1.1-.1-.1C7.14 14.24 4 11.39 4 8.5 4 6.5 5.5 5 7.5 5c1.54 0 3.04.99 3.57 2.36h1.87C13.46 5.99 14.96 5 16.5 5c2 0 3.5 1.5 3.5 3.5 0 2.89-3.14 5.74-7.9 10.05z","children":[]}]]],"style":{"color":"$undefined"},"height":16,"width":16,"xmlns":"http://www.w3.org/2000/svg"}],["$","div",null,{"className":"text-xs mr-2","children":0}]]}],null]}]]}],null]}]}]}]}],["$","div",null,{"className":"rounded-lg border border-gray-300 px-3","children":["$","div",null,{"children":["$","$L7",null,{"href":"/advice/jBDlO4nqFfOSXxhK6xb5","children":["$","div",null,{"className":"flex items-center py-4","children":[["$","div",null,{"className":"flex-1","children":[null,["$","div",null,{"className":"text-xs text-caption line-clamp-2 mb-1","children":"勉強お疲れ様です。\n中学生で高校数学をやっているなんて\nびっくりです。\n\nまず、三角比は直角三角形の鋭角に対して\n定義されています。\nなので、三角比においてはsin、cos、tanは\nすべて正の値となります。\n\nそれに対し、三角関数は単位円の座標から\n求めるものです。\n\nなので三角関数では、sin、cos、tanは\n負になる事もあるという事です。\n\n\nただ、三角関数は三角比の考え方を\n拡張したものなので、\n三角関数を考える際に直角三角形を\n用いる事ができます。\n(むしろその方が分かりやすいです。)\n\n例えばcos150°が何になるかを考えて見て下さい。\n\n単位円上では、cosはx座標に対応しますね。\n単位円で30°の直角三角形と、\n150°~180°の間で形成される30°を\nひとつの角とした直角三角形を\n書いてみてください。\nこの時、これらの三角形がy軸を中心に\n線対称となっている事がわかります。\n\nこの事から、cos150°にマイナスをつけて\n正の値にしたものはcos30°に等しくなる事が\nわかります。\n\nつまり\ncos150°=-cos30°=-√3/2\nと求められます。\n\n\nこのように考える事で、\n第二象限、第三象限、第四象限の三角関数を\n第一象限の三角比から求める事ができます。\n\n理解していただけたでしょうか。\n少しでも参考になれば幸いです。\n何か質問があれば遠慮なく聞いて下さいね。\n勉強頑張って下さい!!"}],["$","div",null,{"className":"flex mb-1","children":[["$","svg",null,{"stroke":"currentColor","fill":"currentColor","strokeWidth":"0","viewBox":"0 0 24 24","className":"text-subPrimary mr-1","children":["$undefined",[["$","path","0",{"fill":"none","d":"M0 0h24v24H0V0z","children":[]}],["$","path","1",{"d":"M12 6c1.1 0 2 .9 2 2s-.9 2-2 2-2-.9-2-2 .9-2 2-2m0 10c2.7 0 5.8 1.29 6 2H6c.23-.72 3.31-2 6-2m0-12C9.79 4 8 5.79 8 8s1.79 4 4 4 4-1.79 4-4-1.79-4-4-4zm0 10c-2.67 0-8 1.34-8 4v2h16v-2c0-2.66-5.33-4-8-4z","children":[]}]]],"style":{"color":"$undefined"},"height":16,"width":16,"xmlns":"http://www.w3.org/2000/svg"}],["$","div",null,{"className":"text-xs","children":["早稲田大学先進理工学部"," ","まさ"]}]]}],["$","div",null,{"className":"flex justify-between","children":[["$","div",null,{"className":"flex","children":[["$","svg",null,{"stroke":"currentColor","fill":"currentColor","strokeWidth":"0","viewBox":"0 0 24 24","className":"text-subPrimary mr-1","children":["$undefined",[["$","path","0",{"fill":"none","d":"M0 0h24v24H0z","children":[]}],["$","path","1",{"d":"M16.5 6v11.5c0 2.21-1.79 4-4 4s-4-1.79-4-4V5a2.5 2.5 0 0 1 5 0v10.5c0 .55-.45 1-1 1s-1-.45-1-1V6H10v9.5a2.5 2.5 0 0 0 5 0V5c0-2.21-1.79-4-4-4S7 2.79 7 5v12.5c0 3.04 2.46 5.5 5.5 5.5s5.5-2.46 5.5-5.5V6h-1.5z","children":[]}]]],"style":{"color":"$undefined"},"height":16,"width":16,"xmlns":"http://www.w3.org/2000/svg"}],["$","div",null,{"className":"text-xs mr-2","children":0}],["$","svg",null,{"stroke":"currentColor","fill":"currentColor","strokeWidth":"0","viewBox":"0 0 24 24","className":"text-subPrimary mr-1","children":["$undefined",[["$","path","0",{"fill":"none","d":"M0 0h24v24H0z","children":[]}],["$","path","1",{"d":"M16.5 3c-1.74 0-3.41.81-4.5 2.09C10.91 3.81 9.24 3 7.5 3 4.42 3 2 5.42 2 8.5c0 3.78 3.4 6.86 8.55 11.54L12 21.35l1.45-1.32C18.6 15.36 22 12.28 22 8.5 22 5.42 19.58 3 16.5 3zm-4.4 15.55-.1.1-.1-.1C7.14 14.24 4 11.39 4 8.5 4 6.5 5.5 5 7.5 5c1.54 0 3.04.99 3.57 2.36h1.87C13.46 5.99 14.96 5 16.5 5c2 0 3.5 1.5 3.5 3.5 0 2.89-3.14 5.74-7.9 10.05z","children":[]}]]],"style":{"color":"$undefined"},"height":16,"width":16,"xmlns":"http://www.w3.org/2000/svg"}],["$","div",null,{"className":"text-xs mr-2","children":0}]]}],null]}]]}],null]}]}]}]}],["$","div",null,{"className":"rounded-lg border-[1.5px] border-primary px-3","children":["$","div",null,{"children":["$","div",null,{"className":"flex items-center py-4","children":[["$","div",null,{"className":"flex-1","children":[null,["$","div",null,{"className":"text-xs text-caption line-clamp-2 mb-1","children":"こんにちは!私もここの単元の同じところで悩んだことがあるのでお答えします!\n\n結論から言いますと、辺の比というよりも座標の値からsinθ、cosθ、tanθのを求めるという考え方に近いと思います。厳密にいうと「辺の比と\"向き\"」を考慮して三角比を算出しているため正負が存在します。分かりやすくいうと、平面座標(単位円上)で考えると三角関数は角度や長さのみではなく「座標の正負」も関与している、ということです!\n\n例えば、\n・cosであればx座標。(底辺の長さの座標)\n  θ=π/4の場合 x=1/√2 \n  θ=3π/4の場合 x=−1/√2\n\n・sinであればy座標。(高さの座標)\n  θ=π/3の場合 y=√3/2\n θ=4π/3の場合 y=−√3/2\n\n・tanであれば斜辺の傾き\n  θ=π/4の場合は 傾き=1\n  θ=3π/4の場合は 傾き=−1\n\n以上のようになります。\n三角関数は、「長さの比」というよりも「座標上の値の比」として考えた方がしっくりくると思います!!"}],["$","div",null,{"className":"flex mb-1","children":[["$","svg",null,{"stroke":"currentColor","fill":"currentColor","strokeWidth":"0","viewBox":"0 0 24 24","className":"text-subPrimary mr-1","children":["$undefined",[["$","path","0",{"fill":"none","d":"M0 0h24v24H0V0z","children":[]}],["$","path","1",{"d":"M12 6c1.1 0 2 .9 2 2s-.9 2-2 2-2-.9-2-2 .9-2 2-2m0 10c2.7 0 5.8 1.29 6 2H6c.23-.72 3.31-2 6-2m0-12C9.79 4 8 5.79 8 8s1.79 4 4 4 4-1.79 4-4-1.79-4-4-4zm0 10c-2.67 0-8 1.34-8 4v2h16v-2c0-2.66-5.33-4-8-4z","children":[]}]]],"style":{"color":"$undefined"},"height":16,"width":16,"xmlns":"http://www.w3.org/2000/svg"}],["$","div",null,{"className":"text-xs","children":["慶應義塾大学薬学部"," ","あにゃ"]}]]}],["$","div",null,{"className":"flex justify-between","children":[["$","div",null,{"className":"flex","children":[["$","svg",null,{"stroke":"currentColor","fill":"currentColor","strokeWidth":"0","viewBox":"0 0 24 24","className":"text-subPrimary mr-1","children":["$undefined",[["$","path","0",{"fill":"none","d":"M0 0h24v24H0z","children":[]}],["$","path","1",{"d":"M16.5 6v11.5c0 2.21-1.79 4-4 4s-4-1.79-4-4V5a2.5 2.5 0 0 1 5 0v10.5c0 .55-.45 1-1 1s-1-.45-1-1V6H10v9.5a2.5 2.5 0 0 0 5 0V5c0-2.21-1.79-4-4-4S7 2.79 7 5v12.5c0 3.04 2.46 5.5 5.5 5.5s5.5-2.46 5.5-5.5V6h-1.5z","children":[]}]]],"style":{"color":"$undefined"},"height":16,"width":16,"xmlns":"http://www.w3.org/2000/svg"}],["$","div",null,{"className":"text-xs mr-2","children":0}],["$","svg",null,{"stroke":"currentColor","fill":"currentColor","strokeWidth":"0","viewBox":"0 0 24 24","className":"text-subPrimary mr-1","children":["$undefined",[["$","path","0",{"fill":"none","d":"M0 0h24v24H0z","children":[]}],["$","path","1",{"d":"M16.5 3c-1.74 0-3.41.81-4.5 2.09C10.91 3.81 9.24 3 7.5 3 4.42 3 2 5.42 2 8.5c0 3.78 3.4 6.86 8.55 11.54L12 21.35l1.45-1.32C18.6 15.36 22 12.28 22 8.5 22 5.42 19.58 3 16.5 3zm-4.4 15.55-.1.1-.1-.1C7.14 14.24 4 11.39 4 8.5 4 6.5 5.5 5 7.5 5c1.54 0 3.04.99 3.57 2.36h1.87C13.46 5.99 14.96 5 16.5 5c2 0 3.5 1.5 3.5 3.5 0 2.89-3.14 5.74-7.9 10.05z","children":[]}]]],"style":{"color":"$undefined"},"height":16,"width":16,"xmlns":"http://www.w3.org/2000/svg"}],["$","div",null,{"className":"text-xs mr-2","children":0}]]}],null]}]]}],null]}]}]}]]}],["$","div",null,{"className":"mt-2","children":["$","$L15",null,{"adviceId":"j7ixaOa3AA6qP87WjHFd"}]}]]}]}]]}],["$","h1",null,{"className":"text-xl font-semibold mb-2","children":"回答"}],["$","div",null,{"className":"mb-4","children":["$","$L16",null,{"adviserImageUrl":null,"adviserName":"あにゃ","adviserDepartment":"慶應義塾大学薬学部","adviceId":"j7ixaOa3AA6qP87WjHFd"}]}],["$","div",null,{"className":"coach-mark mb-4","children":"すべての回答者は、学生証などを使用してUniLinkによって審査された東大・京大・慶應・早稲田・一橋・東工大・旧帝大のいずれかに所属する現役難関大生です。加えて、実際の回答をUniLinkが確認して一定の水準をクリアした合格者だけが登録できる仕組みとなっています。"}],["$","div",null,{"className":"mb-8","children":[["$","div",null,{"className":"leading-loose whitespace-pre-wrap mb-4","children":[["$","div","advice-part-0",{"children":[null,"こんにちは!私もここの単元の同じところで悩んだことがあるのでお答えします!\n\n結論から言いますと、辺の比というよりも座標の値からsinθ、cosθ、tanθのを求めるという考え方に近いと思います。厳密にいうと「辺の比と\"向き\"」を考慮して三角比を算出しているため正負が存在します。分かりやすくいうと、平面座標(単位円上)で考えると三角関数は角度や長さのみではなく「座標の正負」も関与している、ということです!\n\n例えば、\n・cosであればx座標。(底辺の長さの座標)\n  θ=π/4の場合 x=1/√2 \n  θ=3π/4の場合 x=−1/√2\n\n・sinであればy座標。(高さの座標)\n  θ=π/3の場合 y=√3/2\n θ=4π/3の場合 y=−√3/2\n\n・tanであれば斜辺の傾き\n  θ=π/4の場合は 傾き=1\n  θ=3π/4の場合は 傾き=−1\n\n以上のようになります。\n三角関数は、「長さの比」というよりも「座標上の値の比」として考えた方がしっくりくると思います!!"]}]]}],["$","div",null,{"className":"mb-4","children":["$","$L17",null,{"adviserImageUrl":null,"adviserName":"あにゃ","adviserDepartment":"慶應義塾大学薬学部","adviceId":"j7ixaOa3AA6qP87WjHFd","numberOfFan":4,"clipsAvg":2,"adviceRateAvg":5,"profile":""}]}],["$","div",null,{"children":["$","$L7",null,{"href":"https://ck.jp.ap.valuecommerce.com/servlet/referral?sid=3364577&pid=884970531&vc_url=http%3A%2F%2Fshingakunet.com%2F%3Fvos%3Dnrmnvccp0000100","rel":"nofollow","target":"_blank","children":["$","$L8",null,{"src":"/images/document_request_banner.jpg","width":3660,"height":1500,"sizes":"100vw","style":{"width":"100%","height":"auto"},"alt":"UniLink パンフレットバナー画像","className":"mt-4 rounded"}]}]}],["$","div",null,{"className":"pt-4","children":["$","$L18",null,{"id":"adsbygoogle-init-under-advice"}]}]]}],["$","div",null,{"className":"flex justify-between","children":[["$","h1",null,{"className":"text-xl font-semibold","children":["コメント(",1,")"]}],["$","$L19",null,{"adviceId":"j7ixaOa3AA6qP87WjHFd"}]]}],["$","div",null,{"className":"mb-8","children":["$","div",null,{"className":"divide-y","children":[["$","div",null,{"className":"flex py-4","children":[["$","div",null,{"className":"mr-2","children":["$","$L1a",null,{"avatarUrl":"https://firebasestorage.googleapis.com/v0/b/unilink-48e75.appspot.com/o/images%2Fs_5cWSjwl8nNNx07dPzCZo4Z4IWvL2.jpg?alt=media&token=ff0fd940-a746-4acf-8fb6-23d4362180de","contributorName":"かやの","adviceId":"j7ixaOa3AA6qP87WjHFd"}]}],["$","div",null,{"className":"flex-1","children":[["$","div",null,{"className":"flex justify-between","children":[["$","div",null,{"className":"mb-2","children":["$","$L1b",null,{"contributorName":"かやの","adviceId":"j7ixaOa3AA6qP87WjHFd"}]}],["$","div",null,{"className":"text-xs text-caption","children":"3/16 7:06"}]]}],["$","div",null,{"className":"text-xs whitespace-pre-wrap","children":"よく分かりました!!ありがとうございます!"}]]}]]}]]}]}],["$","h1",null,{"className":"text-xl font-semibold","children":"よく一緒に読まれている人気の回答"}],["$","div",null,{"className":"mb-8","children":["$","div",null,{"className":"divide-y","children":[["$","div",null,{"children":["$","$L7",null,{"href":"/advice/e1l3RibQK5KbKKDXkXST","children":["$","div",null,{"className":"flex items-center py-4","children":[["$","div",null,{"className":"flex-1","children":[["$","div",null,{"className":"mb-1","children":"三角比の変換は45度以下にして解くのはなぜ"}],["$","div",null,{"className":"text-xs text-caption line-clamp-2 mb-1","children":"もちろんその解説通りにやらなくても答えを合わせることができるなら大丈夫です!ただそのように解説を書かれた解説者さんの意図をご説明します。\n\n 結論から言うと45°以下に絞ることで三角比に一意性が生まれます。表し方が一通りに絞られるということです。\n\n 例えば今回の問題を借りさせてもらうと、sin140°という値は他にsin40°、−cos130°、cos50°とも表せます。(説明は割愛させて頂きます。)これが45°以下にするという縛りを課すとこの値を三角比で表す方法はsin40°のみになります。\n cos130°も他に−cos50°、−sin40°、−sin140°の表し方ができますが、45°以下にすれば−sin40°になるわけです。\n 30°、45°など直接三角比を求める事ができる有名角以外の角度が出てくる問題は計算していけば必ず打ち消し合うようになっているので、45°以下の制限により表し方を一通りに絞ることで符号だけ違う同じものが出てきて消えてくれるよねっていうことです。他のやり方をしても、結局頭の中では同じことをしていることになると思います。\n\n\n 確実で再現性が高い方法を身につけるのは凄く大事なことですから、解説者さんもそれなりに意図があってその書き方を選択されたのだと思います。このくらいの問題ならわざわざ解説に従って解答を書かなくてもいいですが、難しい問題でこういった方針を採用することで問題が見えやすくなったりすることもあるので役立ててみてください!"}],["$","div",null,{"className":"flex mb-1","children":[["$","svg",null,{"stroke":"currentColor","fill":"currentColor","strokeWidth":"0","viewBox":"0 0 24 24","className":"text-subPrimary mr-1","children":["$undefined",[["$","path","0",{"fill":"none","d":"M0 0h24v24H0V0z","children":[]}],["$","path","1",{"d":"M12 6c1.1 0 2 .9 2 2s-.9 2-2 2-2-.9-2-2 .9-2 2-2m0 10c2.7 0 5.8 1.29 6 2H6c.23-.72 3.31-2 6-2m0-12C9.79 4 8 5.79 8 8s1.79 4 4 4 4-1.79 4-4-1.79-4-4-4zm0 10c-2.67 0-8 1.34-8 4v2h16v-2c0-2.66-5.33-4-8-4z","children":[]}]]],"style":{"color":"$undefined"},"height":16,"width":16,"xmlns":"http://www.w3.org/2000/svg"}],["$","div",null,{"className":"text-xs","children":["東京大学工学部"," ","清水"]}]]}],["$","div",null,{"className":"flex justify-between","children":[["$","div",null,{"className":"flex","children":[["$","svg",null,{"stroke":"currentColor","fill":"currentColor","strokeWidth":"0","viewBox":"0 0 24 24","className":"text-subPrimary mr-1","children":["$undefined",[["$","path","0",{"fill":"none","d":"M0 0h24v24H0z","children":[]}],["$","path","1",{"d":"M16.5 6v11.5c0 2.21-1.79 4-4 4s-4-1.79-4-4V5a2.5 2.5 0 0 1 5 0v10.5c0 .55-.45 1-1 1s-1-.45-1-1V6H10v9.5a2.5 2.5 0 0 0 5 0V5c0-2.21-1.79-4-4-4S7 2.79 7 5v12.5c0 3.04 2.46 5.5 5.5 5.5s5.5-2.46 5.5-5.5V6h-1.5z","children":[]}]]],"style":{"color":"$undefined"},"height":16,"width":16,"xmlns":"http://www.w3.org/2000/svg"}],["$","div",null,{"className":"text-xs mr-2","children":1}],["$","svg",null,{"stroke":"currentColor","fill":"currentColor","strokeWidth":"0","viewBox":"0 0 24 24","className":"text-subPrimary mr-1","children":["$undefined",[["$","path","0",{"fill":"none","d":"M0 0h24v24H0z","children":[]}],["$","path","1",{"d":"M16.5 3c-1.74 0-3.41.81-4.5 2.09C10.91 3.81 9.24 3 7.5 3 4.42 3 2 5.42 2 8.5c0 3.78 3.4 6.86 8.55 11.54L12 21.35l1.45-1.32C18.6 15.36 22 12.28 22 8.5 22 5.42 19.58 3 16.5 3zm-4.4 15.55-.1.1-.1-.1C7.14 14.24 4 11.39 4 8.5 4 6.5 5.5 5 7.5 5c1.54 0 3.04.99 3.57 2.36h1.87C13.46 5.99 14.96 5 16.5 5c2 0 3.5 1.5 3.5 3.5 0 2.89-3.14 5.74-7.9 10.05z","children":[]}]]],"style":{"color":"$undefined"},"height":16,"width":16,"xmlns":"http://www.w3.org/2000/svg"}],["$","div",null,{"className":"text-xs mr-2","children":0}]]}],["$","div",null,{"className":"text-xs rounded-lg border border-text px-4","children":"理系数学"}]]}]]}],["$","div",null,{"className":"ml-3","children":["$","div",null,{"className":"bg-caption w-20 h-20 rounded-sm overflow-hidden","children":["$","div",null,{"className":"w-full h-full relative","children":["$","$L8",null,{"src":"/images/advice-category/math/math4.jpg","fill":true,"style":{"objectFit":"cover"},"sizes":"100%","alt":"理系数学カテゴリの画像","placeholder":"data:image/svg+xml;base64,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"}]}]}]}]]}]}]}],["$","div",null,{"children":["$","$L7",null,{"href":"/advice/KJDbW2EBEoAxXtWxlGjO","children":["$","div",null,{"className":"flex items-center py-4","children":[["$","div",null,{"className":"flex-1","children":[["$","div",null,{"className":"mb-1","children":"数学の応用の勉強"}],["$","div",null,{"className":"text-xs text-caption line-clamp-2 mb-1","children":"$1c"}],["$","div",null,{"className":"flex mb-1","children":[["$","svg",null,{"stroke":"currentColor","fill":"currentColor","strokeWidth":"0","viewBox":"0 0 24 24","className":"text-subPrimary mr-1","children":["$undefined",[["$","path","0",{"fill":"none","d":"M0 0h24v24H0V0z","children":[]}],["$","path","1",{"d":"M12 6c1.1 0 2 .9 2 2s-.9 2-2 2-2-.9-2-2 .9-2 2-2m0 10c2.7 0 5.8 1.29 6 2H6c.23-.72 3.31-2 6-2m0-12C9.79 4 8 5.79 8 8s1.79 4 4 4 4-1.79 4-4-1.79-4-4-4zm0 10c-2.67 0-8 1.34-8 4v2h16v-2c0-2.66-5.33-4-8-4z","children":[]}]]],"style":{"color":"$undefined"},"height":16,"width":16,"xmlns":"http://www.w3.org/2000/svg"}],["$","div",null,{"className":"text-xs","children":["京都大学工学部"," ","hiroki"]}]]}],["$","div",null,{"className":"flex justify-between","children":[["$","div",null,{"className":"flex","children":[["$","svg",null,{"stroke":"currentColor","fill":"currentColor","strokeWidth":"0","viewBox":"0 0 24 24","className":"text-subPrimary mr-1","children":["$undefined",[["$","path","0",{"fill":"none","d":"M0 0h24v24H0z","children":[]}],["$","path","1",{"d":"M16.5 6v11.5c0 2.21-1.79 4-4 4s-4-1.79-4-4V5a2.5 2.5 0 0 1 5 0v10.5c0 .55-.45 1-1 1s-1-.45-1-1V6H10v9.5a2.5 2.5 0 0 0 5 0V5c0-2.21-1.79-4-4-4S7 2.79 7 5v12.5c0 3.04 2.46 5.5 5.5 5.5s5.5-2.46 5.5-5.5V6h-1.5z","children":[]}]]],"style":{"color":"$undefined"},"height":16,"width":16,"xmlns":"http://www.w3.org/2000/svg"}],["$","div",null,{"className":"text-xs mr-2","children":27}],["$","svg",null,{"stroke":"currentColor","fill":"currentColor","strokeWidth":"0","viewBox":"0 0 24 24","className":"text-subPrimary mr-1","children":["$undefined",[["$","path","0",{"fill":"none","d":"M0 0h24v24H0z","children":[]}],["$","path","1",{"d":"M16.5 3c-1.74 0-3.41.81-4.5 2.09C10.91 3.81 9.24 3 7.5 3 4.42 3 2 5.42 2 8.5c0 3.78 3.4 6.86 8.55 11.54L12 21.35l1.45-1.32C18.6 15.36 22 12.28 22 8.5 22 5.42 19.58 3 16.5 3zm-4.4 15.55-.1.1-.1-.1C7.14 14.24 4 11.39 4 8.5 4 6.5 5.5 5 7.5 5c1.54 0 3.04.99 3.57 2.36h1.87C13.46 5.99 14.96 5 16.5 5c2 0 3.5 1.5 3.5 3.5 0 2.89-3.14 5.74-7.9 10.05z","children":[]}]]],"style":{"color":"$undefined"},"height":16,"width":16,"xmlns":"http://www.w3.org/2000/svg"}],["$","div",null,{"className":"text-xs mr-2","children":2}]]}],["$","div",null,{"className":"text-xs rounded-lg border border-text px-4","children":"文系数学"}]]}]]}],["$","div",null,{"className":"ml-3","children":["$","div",null,{"className":"bg-caption w-20 h-20 rounded-sm overflow-hidden","children":["$","div",null,{"className":"w-full h-full relative","children":["$","$L8",null,{"src":"/images/advice-category/math/math14.jpg","fill":true,"style":{"objectFit":"cover"},"sizes":"100%","alt":"文系数学カテゴリの画像","placeholder":"data:image/svg+xml;base64,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"}]}]}]}]]}]}]}],["$","$L1d","ad-on-advice-list-2",{"id":"ad-on-advice-list-2"}],["$","div",null,{"children":["$","$L7",null,{"href":"/advice/wlLMgoIBTqPwDZPuosCg","children":["$","div",null,{"className":"flex items-center py-4","children":[["$","div",null,{"className":"flex-1","children":[["$","div",null,{"className":"mb-1","children":"助けてくださいby三角比でつまづいた高1文一志望"}],["$","div",null,{"className":"text-xs text-caption line-clamp-2 mb-1","children":" 何がわかんないのかわかんないんでなんとも言えないんですが、正直難しい単元ではないので集中的に3.4日程度時間取ればほぼ仕上げることはできると思いますよ。高一なら苦手単元に時間を割いてもあまり痛くないですし、むしろ極端な苦手は気合入れて一気に直しちゃった方がいいですから、4日くらい三角比(関数?)漬けになってみてください。きっとできるようになります。\n ちなみにそれでも完璧にならない!って場合でも、基礎さえできてれば正直三角比(関数)はほっといても良いです。後々数学に接してると死ぬほど出てくるんで勝手にできるようになります。ただし基礎さえできてれば、ですよ! 僕も昔は苦手でした。\n\n 一つ大事なのは、焦らずに落ち着いて勉強することです。わかんない!やばい!って思いながら勉強してると、不思議なことにどんだけやってもわかんないので、落ち着いて、噛み締めるように勉強していってください。まだ高一ですから焦らずに。"}],["$","div",null,{"className":"flex mb-1","children":[["$","svg",null,{"stroke":"currentColor","fill":"currentColor","strokeWidth":"0","viewBox":"0 0 24 24","className":"text-subPrimary mr-1","children":["$undefined",[["$","path","0",{"fill":"none","d":"M0 0h24v24H0V0z","children":[]}],["$","path","1",{"d":"M12 6c1.1 0 2 .9 2 2s-.9 2-2 2-2-.9-2-2 .9-2 2-2m0 10c2.7 0 5.8 1.29 6 2H6c.23-.72 3.31-2 6-2m0-12C9.79 4 8 5.79 8 8s1.79 4 4 4 4-1.79 4-4-1.79-4-4-4zm0 10c-2.67 0-8 1.34-8 4v2h16v-2c0-2.66-5.33-4-8-4z","children":[]}]]],"style":{"color":"$undefined"},"height":16,"width":16,"xmlns":"http://www.w3.org/2000/svg"}],["$","div",null,{"className":"text-xs","children":["東京大学理科一類"," ","Atom"]}]]}],["$","div",null,{"className":"flex justify-between","children":[["$","div",null,{"className":"flex","children":[["$","svg",null,{"stroke":"currentColor","fill":"currentColor","strokeWidth":"0","viewBox":"0 0 24 24","className":"text-subPrimary mr-1","children":["$undefined",[["$","path","0",{"fill":"none","d":"M0 0h24v24H0z","children":[]}],["$","path","1",{"d":"M16.5 6v11.5c0 2.21-1.79 4-4 4s-4-1.79-4-4V5a2.5 2.5 0 0 1 5 0v10.5c0 .55-.45 1-1 1s-1-.45-1-1V6H10v9.5a2.5 2.5 0 0 0 5 0V5c0-2.21-1.79-4-4-4S7 2.79 7 5v12.5c0 3.04 2.46 5.5 5.5 5.5s5.5-2.46 5.5-5.5V6h-1.5z","children":[]}]]],"style":{"color":"$undefined"},"height":16,"width":16,"xmlns":"http://www.w3.org/2000/svg"}],["$","div",null,{"className":"text-xs mr-2","children":0}],["$","svg",null,{"stroke":"currentColor","fill":"currentColor","strokeWidth":"0","viewBox":"0 0 24 24","className":"text-subPrimary mr-1","children":["$undefined",[["$","path","0",{"fill":"none","d":"M0 0h24v24H0z","children":[]}],["$","path","1",{"d":"M16.5 3c-1.74 0-3.41.81-4.5 2.09C10.91 3.81 9.24 3 7.5 3 4.42 3 2 5.42 2 8.5c0 3.78 3.4 6.86 8.55 11.54L12 21.35l1.45-1.32C18.6 15.36 22 12.28 22 8.5 22 5.42 19.58 3 16.5 3zm-4.4 15.55-.1.1-.1-.1C7.14 14.24 4 11.39 4 8.5 4 6.5 5.5 5 7.5 5c1.54 0 3.04.99 3.57 2.36h1.87C13.46 5.99 14.96 5 16.5 5c2 0 3.5 1.5 3.5 3.5 0 2.89-3.14 5.74-7.9 10.05z","children":[]}]]],"style":{"color":"$undefined"},"height":16,"width":16,"xmlns":"http://www.w3.org/2000/svg"}],["$","div",null,{"className":"text-xs mr-2","children":2}]]}],["$","div",null,{"className":"text-xs rounded-lg border border-text px-4","children":"文系数学"}]]}]]}],["$","div",null,{"className":"ml-3","children":["$","div",null,{"className":"bg-caption w-20 h-20 rounded-sm overflow-hidden","children":["$","div",null,{"className":"w-full h-full relative","children":["$","$L8",null,{"src":"/images/advice-category/math/math8.jpg","fill":true,"style":{"objectFit":"cover"},"sizes":"100%","alt":"文系数学カテゴリの画像","placeholder":"data:image/svg+xml;base64,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"}]}]}]}]]}]}]}],["$","div",null,{"children":["$","$L7",null,{"href":"/advice/TWCWs7sAwPradPWAChx8","children":["$","div",null,{"className":"flex items-center py-4","children":[["$","div",null,{"className":"flex-1","children":[["$","div",null,{"className":"mb-1","children":"間違っているとおもう。"}],["$","div",null,{"className":"text-xs text-caption line-clamp-2 mb-1","children":"答えさせていただきます。まず、ズンクスさんの解答で言えば、k=(π^2)/3が3の倍数になっている点がまず正しくないです。ここでは、π^2が3の倍数(3k)であるという仮定があるので、kは3の倍数かどうか不明な整数になるはずです。おそらく、「3の倍数」を、「なにかの数を3で割ってできる数」と誤解されているのだと思われます。3の倍数とは、「3で割り切れる整数」のことです。\n\nこれを踏まえ、以下に簡潔な解答を示させていただきます。その前に、ヒントを残しますので、先にヒントを読んで考えてみて、それから解答を確認してみて下さい。\nヒント:π=3.141592…は、そもそも二乗して整数にならないのではないか?\n\n以下解答です。\n\nまず、3<π<3.15により、\n 9<π^2<3.15^2=9.9225<10である。\n従って、π^2は9と10の間にあるから、整数でない。よって、π^2は3の倍数でない。(証明終)\n\n厳密には、π<3.15を示す必要があるのですが、高校一年生の範囲での証明は難しく、今回は省略させていただきます。π>3については、半径1の円に内接する正六角形の周の長さと円周を比べていただければほとんど自明です。\n\nおそらく、そのお友達の出題の背景には、かつてゆとり教育で「円周率を3として扱う」場面があったことへの皮肉があると思われます。もしそうであれば、π^2は9で、当然3の倍数になります。\n\n話がそれましたが、ある数が整数でないことを示すには、その数に近そうな整数との大小を比較してあげるのが非常に効果的です。"}],["$","div",null,{"className":"flex mb-1","children":[["$","svg",null,{"stroke":"currentColor","fill":"currentColor","strokeWidth":"0","viewBox":"0 0 24 24","className":"text-subPrimary mr-1","children":["$undefined",[["$","path","0",{"fill":"none","d":"M0 0h24v24H0V0z","children":[]}],["$","path","1",{"d":"M12 6c1.1 0 2 .9 2 2s-.9 2-2 2-2-.9-2-2 .9-2 2-2m0 10c2.7 0 5.8 1.29 6 2H6c.23-.72 3.31-2 6-2m0-12C9.79 4 8 5.79 8 8s1.79 4 4 4 4-1.79 4-4-1.79-4-4-4zm0 10c-2.67 0-8 1.34-8 4v2h16v-2c0-2.66-5.33-4-8-4z","children":[]}]]],"style":{"color":"$undefined"},"height":16,"width":16,"xmlns":"http://www.w3.org/2000/svg"}],["$","div",null,{"className":"text-xs","children":["京都大学工学部"," ","黒澤"]}]]}],["$","div",null,{"className":"flex justify-between","children":[["$","div",null,{"className":"flex","children":[["$","svg",null,{"stroke":"currentColor","fill":"currentColor","strokeWidth":"0","viewBox":"0 0 24 24","className":"text-subPrimary mr-1","children":["$undefined",[["$","path","0",{"fill":"none","d":"M0 0h24v24H0z","children":[]}],["$","path","1",{"d":"M16.5 6v11.5c0 2.21-1.79 4-4 4s-4-1.79-4-4V5a2.5 2.5 0 0 1 5 0v10.5c0 .55-.45 1-1 1s-1-.45-1-1V6H10v9.5a2.5 2.5 0 0 0 5 0V5c0-2.21-1.79-4-4-4S7 2.79 7 5v12.5c0 3.04 2.46 5.5 5.5 5.5s5.5-2.46 5.5-5.5V6h-1.5z","children":[]}]]],"style":{"color":"$undefined"},"height":16,"width":16,"xmlns":"http://www.w3.org/2000/svg"}],["$","div",null,{"className":"text-xs mr-2","children":0}],["$","svg",null,{"stroke":"currentColor","fill":"currentColor","strokeWidth":"0","viewBox":"0 0 24 24","className":"text-subPrimary mr-1","children":["$undefined",[["$","path","0",{"fill":"none","d":"M0 0h24v24H0z","children":[]}],["$","path","1",{"d":"M16.5 3c-1.74 0-3.41.81-4.5 2.09C10.91 3.81 9.24 3 7.5 3 4.42 3 2 5.42 2 8.5c0 3.78 3.4 6.86 8.55 11.54L12 21.35l1.45-1.32C18.6 15.36 22 12.28 22 8.5 22 5.42 19.58 3 16.5 3zm-4.4 15.55-.1.1-.1-.1C7.14 14.24 4 11.39 4 8.5 4 6.5 5.5 5 7.5 5c1.54 0 3.04.99 3.57 2.36h1.87C13.46 5.99 14.96 5 16.5 5c2 0 3.5 1.5 3.5 3.5 0 2.89-3.14 5.74-7.9 10.05z","children":[]}]]],"style":{"color":"$undefined"},"height":16,"width":16,"xmlns":"http://www.w3.org/2000/svg"}],["$","div",null,{"className":"text-xs mr-2","children":1}]]}],["$","div",null,{"className":"text-xs rounded-lg border border-text px-4","children":"理系数学"}]]}]]}],["$","div",null,{"className":"ml-3","children":["$","div",null,{"className":"bg-caption w-20 h-20 rounded-sm overflow-hidden","children":["$","div",null,{"className":"w-full h-full relative","children":["$","$L8",null,{"src":"/images/advice-category/math/math10.jpg","fill":true,"style":{"objectFit":"cover"},"sizes":"100%","alt":"理系数学カテゴリの画像","placeholder":"data:image/svg+xml;base64,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"}]}]}]}]]}]}]}],["$","div",null,{"children":["$","$L7",null,{"href":"/advice/LFWHFwpXZI5OUzr1rjP6","children":["$","div",null,{"className":"flex items-center py-4","children":[["$","div",null,{"className":"flex-1","children":[["$","div",null,{"className":"mb-1","children":"三角比はある程度理解してとばしたほうがいいのか?"}],["$","div",null,{"className":"text-xs text-caption line-clamp-2 mb-1","children":"こんにちは!受験勉強お疲れ様です!\n\nまず数Ⅱで習う三角関数ですが、これは数Ⅰで習う三角比を関数として拡張したものになります。そのため、三角比との用途はある程度異なるものになります。三角関数は関数としての側面が重視されますが、三角比は図形問題に置ける使用がほとんどです。\n\n計算問題としての三角比の応用問題であれば、三角関数を理解することで十分対応が可能であると考えられますが、三角比を用いた図形問題になれることも大切でしょう。そしてこれら、三角比を用いた図形問題は、共通テストでも必ず出題されます。そのため、三角比の問題をしっかりこなすことは必ず意味がある行為です。\n\n三角比を用いた図形問題に早いうちから触れておくことは重要ですし、三角比をきちんと理解することで三角関数の正確な理解にも繋がります。\n\nそして、一般に受験生としては先取りを早く進めることも重要ですが、その都度分野を深く理解することが大切です。\n\n私自身、先取りを高一で数Ⅲまで行っていましたが、経験上、その都度先取りした分野はある程度完璧にしておかないと、先取りの意味があまり無くなってしまいます。先取りが終わった後あまり完成度が高くなければ、本末転倒です。\n\nとはいえ、分野を周回しているうちに、習熟度も上がっていくのも事実です。そのため、図形的な応用はもちろん、三角比についてきちんと理解しながら、先取りを進めていくことがベストでしょう。\n\n私のおすすめの勉強法は先取りをしつつ、勉強した分野を定期的に復習するという勉強法です。学校の定期テストや模試などをペースメーカーにして復習するのも良いでしょう。そうすることで先取りかつ取りこぼしなく勉強できます。\n\n長くなりましたが、まとめると\n1.三角比には図形問題という側面が大きく三角関数が完全に互換性のあるものではないということ\n2.先取りは分野ごとにある程度仕上げる必要があり、復習とのバランスが大切だということ\n3.復習のペースメーカーには定期テストや模試を有効活用できるということ\n以上3点です。\n\n受験勉強頑張ってくださいね!志望校合格をお祈りしています✨"}],["$","div",null,{"className":"flex mb-1","children":[["$","svg",null,{"stroke":"currentColor","fill":"currentColor","strokeWidth":"0","viewBox":"0 0 24 24","className":"text-subPrimary mr-1","children":["$undefined",[["$","path","0",{"fill":"none","d":"M0 0h24v24H0V0z","children":[]}],["$","path","1",{"d":"M12 6c1.1 0 2 .9 2 2s-.9 2-2 2-2-.9-2-2 .9-2 2-2m0 10c2.7 0 5.8 1.29 6 2H6c.23-.72 3.31-2 6-2m0-12C9.79 4 8 5.79 8 8s1.79 4 4 4 4-1.79 4-4-1.79-4-4-4zm0 10c-2.67 0-8 1.34-8 4v2h16v-2c0-2.66-5.33-4-8-4z","children":[]}]]],"style":{"color":"$undefined"},"height":16,"width":16,"xmlns":"http://www.w3.org/2000/svg"}],["$","div",null,{"className":"text-xs","children":["九州大学医学部"," ","sei108"]}]]}],["$","div",null,{"className":"flex justify-between","children":[["$","div",null,{"className":"flex","children":[["$","svg",null,{"stroke":"currentColor","fill":"currentColor","strokeWidth":"0","viewBox":"0 0 24 24","className":"text-subPrimary mr-1","children":["$undefined",[["$","path","0",{"fill":"none","d":"M0 0h24v24H0z","children":[]}],["$","path","1",{"d":"M16.5 6v11.5c0 2.21-1.79 4-4 4s-4-1.79-4-4V5a2.5 2.5 0 0 1 5 0v10.5c0 .55-.45 1-1 1s-1-.45-1-1V6H10v9.5a2.5 2.5 0 0 0 5 0V5c0-2.21-1.79-4-4-4S7 2.79 7 5v12.5c0 3.04 2.46 5.5 5.5 5.5s5.5-2.46 5.5-5.5V6h-1.5z","children":[]}]]],"style":{"color":"$undefined"},"height":16,"width":16,"xmlns":"http://www.w3.org/2000/svg"}],["$","div",null,{"className":"text-xs mr-2","children":0}],["$","svg",null,{"stroke":"currentColor","fill":"currentColor","strokeWidth":"0","viewBox":"0 0 24 24","className":"text-subPrimary mr-1","children":["$undefined",[["$","path","0",{"fill":"none","d":"M0 0h24v24H0z","children":[]}],["$","path","1",{"d":"M16.5 3c-1.74 0-3.41.81-4.5 2.09C10.91 3.81 9.24 3 7.5 3 4.42 3 2 5.42 2 8.5c0 3.78 3.4 6.86 8.55 11.54L12 21.35l1.45-1.32C18.6 15.36 22 12.28 22 8.5 22 5.42 19.58 3 16.5 3zm-4.4 15.55-.1.1-.1-.1C7.14 14.24 4 11.39 4 8.5 4 6.5 5.5 5 7.5 5c1.54 0 3.04.99 3.57 2.36h1.87C13.46 5.99 14.96 5 16.5 5c2 0 3.5 1.5 3.5 3.5 0 2.89-3.14 5.74-7.9 10.05z","children":[]}]]],"style":{"color":"$undefined"},"height":16,"width":16,"xmlns":"http://www.w3.org/2000/svg"}],["$","div",null,{"className":"text-xs mr-2","children":1}]]}],["$","div",null,{"className":"text-xs rounded-lg border border-text px-4","children":"理系数学"}]]}]]}],["$","div",null,{"className":"ml-3","children":["$","div",null,{"className":"bg-caption w-20 h-20 rounded-sm overflow-hidden","children":["$","div",null,{"className":"w-full h-full relative","children":["$","$L8",null,{"src":"/images/advice-category/math/math12.jpg","fill":true,"style":{"objectFit":"cover"},"sizes":"100%","alt":"理系数学カテゴリの画像","placeholder":"data:image/svg+xml;base64,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"}]}]}]}]]}]}]}],["$","$L1d","ad-on-advice-list-5",{"id":"ad-on-advice-list-5"}],["$","div",null,{"children":["$","$L7",null,{"href":"/advice/mRrjb2sBTqPwDZPun1eM","children":["$","div",null,{"className":"flex items-center py-4","children":[["$","div",null,{"className":"flex-1","children":[["$","div",null,{"className":"mb-1","children":"数学の図形の参考書を別にやるべきか"}],["$","div",null,{"className":"text-xs text-caption line-clamp-2 mb-1","children":"\n着眼的にはかなりいいと思います。自分の苦手な分野をそれについて徹底的に練習し、解説してある参考書で苦手を補うということは大切です。\nもし、図形に特化した問題集があるのならやってみたらいいと思います。\nが、僕の知ってる限りではあまり図形に特化したものというのはないんですよね。\n\n整数、場合の数・確率、微積・三角関数、等のものは結構専用の参考書あるんですが、図形については、見たことはありません。\n\nもしなかった場合、自分なりに図形に関してまとめるというのがいいと思います。\n例えば、直角って聞いたら、\n直角二等辺三角形、30・60・90度の三角形、正方形・長方形、傾き-1、内積0などが思いつくとおもいます。この辺を自分なりにまとめておくと、かなり頭の中が整理されてくると思います。\n\n基本的に高3までの数学は、単元ごとに学んでそれを潰していたと思うんですが、これからは別のまとめ方をして、1つの問題に対して色んな考え方をしていきましょう。そうすると数学力ぐんと伸びます。\n\nまた、この色んな方向からまとめてみるというのは、ほかの科目でも使えます。イメージとしては、暗記したものを、あらゆる方向から縛ってがんじがらめにする感じです。そうすると定着率があがるだけでなく、色んな場面でのアウトプットがしやすくなりますよ。\n"}],["$","div",null,{"className":"flex mb-1","children":[["$","svg",null,{"stroke":"currentColor","fill":"currentColor","strokeWidth":"0","viewBox":"0 0 24 24","className":"text-subPrimary mr-1","children":["$undefined",[["$","path","0",{"fill":"none","d":"M0 0h24v24H0V0z","children":[]}],["$","path","1",{"d":"M12 6c1.1 0 2 .9 2 2s-.9 2-2 2-2-.9-2-2 .9-2 2-2m0 10c2.7 0 5.8 1.29 6 2H6c.23-.72 3.31-2 6-2m0-12C9.79 4 8 5.79 8 8s1.79 4 4 4 4-1.79 4-4-1.79-4-4-4zm0 10c-2.67 0-8 1.34-8 4v2h16v-2c0-2.66-5.33-4-8-4z","children":[]}]]],"style":{"color":"$undefined"},"height":16,"width":16,"xmlns":"http://www.w3.org/2000/svg"}],["$","div",null,{"className":"text-xs","children":["慶應義塾大学商学部"," ","タイ"]}]]}],["$","div",null,{"className":"flex justify-between","children":[["$","div",null,{"className":"flex","children":[["$","svg",null,{"stroke":"currentColor","fill":"currentColor","strokeWidth":"0","viewBox":"0 0 24 24","className":"text-subPrimary mr-1","children":["$undefined",[["$","path","0",{"fill":"none","d":"M0 0h24v24H0z","children":[]}],["$","path","1",{"d":"M16.5 6v11.5c0 2.21-1.79 4-4 4s-4-1.79-4-4V5a2.5 2.5 0 0 1 5 0v10.5c0 .55-.45 1-1 1s-1-.45-1-1V6H10v9.5a2.5 2.5 0 0 0 5 0V5c0-2.21-1.79-4-4-4S7 2.79 7 5v12.5c0 3.04 2.46 5.5 5.5 5.5s5.5-2.46 5.5-5.5V6h-1.5z","children":[]}]]],"style":{"color":"$undefined"},"height":16,"width":16,"xmlns":"http://www.w3.org/2000/svg"}],["$","div",null,{"className":"text-xs mr-2","children":7}],["$","svg",null,{"stroke":"currentColor","fill":"currentColor","strokeWidth":"0","viewBox":"0 0 24 24","className":"text-subPrimary mr-1","children":["$undefined",[["$","path","0",{"fill":"none","d":"M0 0h24v24H0z","children":[]}],["$","path","1",{"d":"M16.5 3c-1.74 0-3.41.81-4.5 2.09C10.91 3.81 9.24 3 7.5 3 4.42 3 2 5.42 2 8.5c0 3.78 3.4 6.86 8.55 11.54L12 21.35l1.45-1.32C18.6 15.36 22 12.28 22 8.5 22 5.42 19.58 3 16.5 3zm-4.4 15.55-.1.1-.1-.1C7.14 14.24 4 11.39 4 8.5 4 6.5 5.5 5 7.5 5c1.54 0 3.04.99 3.57 2.36h1.87C13.46 5.99 14.96 5 16.5 5c2 0 3.5 1.5 3.5 3.5 0 2.89-3.14 5.74-7.9 10.05z","children":[]}]]],"style":{"color":"$undefined"},"height":16,"width":16,"xmlns":"http://www.w3.org/2000/svg"}],["$","div",null,{"className":"text-xs mr-2","children":2}]]}],["$","div",null,{"className":"text-xs rounded-lg border border-text px-4","children":"文系数学"}]]}]]}],["$","div",null,{"className":"ml-3","children":["$","div",null,{"className":"bg-caption w-20 h-20 rounded-sm overflow-hidden","children":["$","div",null,{"className":"w-full h-full relative","children":["$","$L8",null,{"src":"/images/advice-category/math/math1.jpg","fill":true,"style":{"objectFit":"cover"},"sizes":"100%","alt":"文系数学カテゴリの画像","placeholder":"data:image/svg+xml;base64,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"}]}]}]}]]}]}]}],["$","div",null,{"children":["$","$L7",null,{"href":"/advice/eurDUGgBTqPwDZPucTMs","children":["$","div",null,{"className":"flex items-center py-4","children":[["$","div",null,{"className":"flex-1","children":[["$","div",null,{"className":"mb-1","children":"センター数学"}],["$","div",null,{"className":"text-xs text-caption line-clamp-2 mb-1","children":"$1e"}],["$","div",null,{"className":"flex mb-1","children":[["$","svg",null,{"stroke":"currentColor","fill":"currentColor","strokeWidth":"0","viewBox":"0 0 24 24","className":"text-subPrimary mr-1","children":["$undefined",[["$","path","0",{"fill":"none","d":"M0 0h24v24H0V0z","children":[]}],["$","path","1",{"d":"M12 6c1.1 0 2 .9 2 2s-.9 2-2 2-2-.9-2-2 .9-2 2-2m0 10c2.7 0 5.8 1.29 6 2H6c.23-.72 3.31-2 6-2m0-12C9.79 4 8 5.79 8 8s1.79 4 4 4 4-1.79 4-4-1.79-4-4-4zm0 10c-2.67 0-8 1.34-8 4v2h16v-2c0-2.66-5.33-4-8-4z","children":[]}]]],"style":{"color":"$undefined"},"height":16,"width":16,"xmlns":"http://www.w3.org/2000/svg"}],["$","div",null,{"className":"text-xs","children":["早稲田大学先進理工学部"," ","ROX"]}]]}],["$","div",null,{"className":"flex justify-between","children":[["$","div",null,{"className":"flex","children":[["$","svg",null,{"stroke":"currentColor","fill":"currentColor","strokeWidth":"0","viewBox":"0 0 24 24","className":"text-subPrimary mr-1","children":["$undefined",[["$","path","0",{"fill":"none","d":"M0 0h24v24H0z","children":[]}],["$","path","1",{"d":"M16.5 6v11.5c0 2.21-1.79 4-4 4s-4-1.79-4-4V5a2.5 2.5 0 0 1 5 0v10.5c0 .55-.45 1-1 1s-1-.45-1-1V6H10v9.5a2.5 2.5 0 0 0 5 0V5c0-2.21-1.79-4-4-4S7 2.79 7 5v12.5c0 3.04 2.46 5.5 5.5 5.5s5.5-2.46 5.5-5.5V6h-1.5z","children":[]}]]],"style":{"color":"$undefined"},"height":16,"width":16,"xmlns":"http://www.w3.org/2000/svg"}],["$","div",null,{"className":"text-xs mr-2","children":19}],["$","svg",null,{"stroke":"currentColor","fill":"currentColor","strokeWidth":"0","viewBox":"0 0 24 24","className":"text-subPrimary mr-1","children":["$undefined",[["$","path","0",{"fill":"none","d":"M0 0h24v24H0z","children":[]}],["$","path","1",{"d":"M16.5 3c-1.74 0-3.41.81-4.5 2.09C10.91 3.81 9.24 3 7.5 3 4.42 3 2 5.42 2 8.5c0 3.78 3.4 6.86 8.55 11.54L12 21.35l1.45-1.32C18.6 15.36 22 12.28 22 8.5 22 5.42 19.58 3 16.5 3zm-4.4 15.55-.1.1-.1-.1C7.14 14.24 4 11.39 4 8.5 4 6.5 5.5 5 7.5 5c1.54 0 3.04.99 3.57 2.36h1.87C13.46 5.99 14.96 5 16.5 5c2 0 3.5 1.5 3.5 3.5 0 2.89-3.14 5.74-7.9 10.05z","children":[]}]]],"style":{"color":"$undefined"},"height":16,"width":16,"xmlns":"http://www.w3.org/2000/svg"}],["$","div",null,{"className":"text-xs mr-2","children":0}]]}],["$","div",null,{"className":"text-xs rounded-lg border border-text px-4","children":"文系数学"}]]}]]}],["$","div",null,{"className":"ml-3","children":["$","div",null,{"className":"bg-caption w-20 h-20 rounded-sm overflow-hidden","children":["$","div",null,{"className":"w-full h-full relative","children":["$","$L8",null,{"src":"/images/advice-category/math/math4.jpg","fill":true,"style":{"objectFit":"cover"},"sizes":"100%","alt":"文系数学カテゴリの画像","placeholder":"data:image/svg+xml;base64,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"}]}]}]}]]}]}]}],["$","div",null,{"children":["$","$L7",null,{"href":"/advice/SkvpO3QBTqPwDZPu2DxZ","children":["$","div",null,{"className":"flex items-center py-4","children":[["$","div",null,{"className":"flex-1","children":[["$","div",null,{"className":"mb-1","children":"共通テスト数学 点数取れない"}],["$","div",null,{"className":"text-xs text-caption line-clamp-2 mb-1","children":"こんにちは!\n\n数学では、問題文に出ている数や文字からある程度方針が立てられるような問題が多いです。\n\n簡単な例ですが、例えば三角関数では、問題文に外接円が出てきたら正弦定理を使うのだろう、問題文に3つの辺が(もしくは2辺と角の大きさが)でてきているなら余弦定理を使うのだろう、と言ったものです。\n\n問題集に関わらず、解いているときや解説を見るときにこの見方ができるようになるかならないかで大きく成長度合いは変わっていきます。ここが大事なポイントです!\n\nこれができるようになると、〇について求めたいから、先に☆について求めればいいのか!という考え方ができるようになっていきます。\n\n勉強法は様々ありますが、問題集をやる→間違えたところをチェック→1日後と3日後にもう一度→1週間後と1ヶ月後にもう一度がおすすめです。期間は人によりますが、私は答えや解き方を暗記してしまわないようにこのサイクルで行っていました。言い換えると、解き方を思い出して解くのではなく、きちんと解き方を考えながら解くようにしていたということです。解き方を暗記してしまうと応用が効きにくくなってしまうからです!伸び悩んでしまう人がしがちなポイントです。\n\n以上の2点抑えてくだされば、キヨ猫さんはもっと伸びるかなと思います(すでにできていたら申し訳ないです_(._.)_)。あとはやはり量をこなしましょう。勉強は効率と量のかけ算だと思います。数学は特に解き慣れていくことが大切です。\n\nまじでがんばってください!みんな応援しています!\n\n"}],["$","div",null,{"className":"flex mb-1","children":[["$","svg",null,{"stroke":"currentColor","fill":"currentColor","strokeWidth":"0","viewBox":"0 0 24 24","className":"text-subPrimary mr-1","children":["$undefined",[["$","path","0",{"fill":"none","d":"M0 0h24v24H0V0z","children":[]}],["$","path","1",{"d":"M12 6c1.1 0 2 .9 2 2s-.9 2-2 2-2-.9-2-2 .9-2 2-2m0 10c2.7 0 5.8 1.29 6 2H6c.23-.72 3.31-2 6-2m0-12C9.79 4 8 5.79 8 8s1.79 4 4 4 4-1.79 4-4-1.79-4-4-4zm0 10c-2.67 0-8 1.34-8 4v2h16v-2c0-2.66-5.33-4-8-4z","children":[]}]]],"style":{"color":"$undefined"},"height":16,"width":16,"xmlns":"http://www.w3.org/2000/svg"}],["$","div",null,{"className":"text-xs","children":["東北大学農学部"," ","HNO3"]}]]}],["$","div",null,{"className":"flex justify-between","children":[["$","div",null,{"className":"flex","children":[["$","svg",null,{"stroke":"currentColor","fill":"currentColor","strokeWidth":"0","viewBox":"0 0 24 24","className":"text-subPrimary mr-1","children":["$undefined",[["$","path","0",{"fill":"none","d":"M0 0h24v24H0z","children":[]}],["$","path","1",{"d":"M16.5 6v11.5c0 2.21-1.79 4-4 4s-4-1.79-4-4V5a2.5 2.5 0 0 1 5 0v10.5c0 .55-.45 1-1 1s-1-.45-1-1V6H10v9.5a2.5 2.5 0 0 0 5 0V5c0-2.21-1.79-4-4-4S7 2.79 7 5v12.5c0 3.04 2.46 5.5 5.5 5.5s5.5-2.46 5.5-5.5V6h-1.5z","children":[]}]]],"style":{"color":"$undefined"},"height":16,"width":16,"xmlns":"http://www.w3.org/2000/svg"}],["$","div",null,{"className":"text-xs mr-2","children":20}],["$","svg",null,{"stroke":"currentColor","fill":"currentColor","strokeWidth":"0","viewBox":"0 0 24 24","className":"text-subPrimary mr-1","children":["$undefined",[["$","path","0",{"fill":"none","d":"M0 0h24v24H0z","children":[]}],["$","path","1",{"d":"M16.5 3c-1.74 0-3.41.81-4.5 2.09C10.91 3.81 9.24 3 7.5 3 4.42 3 2 5.42 2 8.5c0 3.78 3.4 6.86 8.55 11.54L12 21.35l1.45-1.32C18.6 15.36 22 12.28 22 8.5 22 5.42 19.58 3 16.5 3zm-4.4 15.55-.1.1-.1-.1C7.14 14.24 4 11.39 4 8.5 4 6.5 5.5 5 7.5 5c1.54 0 3.04.99 3.57 2.36h1.87C13.46 5.99 14.96 5 16.5 5c2 0 3.5 1.5 3.5 3.5 0 2.89-3.14 5.74-7.9 10.05z","children":[]}]]],"style":{"color":"$undefined"},"height":16,"width":16,"xmlns":"http://www.w3.org/2000/svg"}],["$","div",null,{"className":"text-xs mr-2","children":2}]]}],["$","div",null,{"className":"text-xs rounded-lg border border-text px-4","children":"理系数学"}]]}]]}],["$","div",null,{"className":"ml-3","children":["$","div",null,{"className":"bg-caption w-20 h-20 rounded-sm overflow-hidden","children":["$","div",null,{"className":"w-full h-full relative","children":["$","$L8",null,{"src":"/images/advice-category/math/math1.jpg","fill":true,"style":{"objectFit":"cover"},"sizes":"100%","alt":"理系数学カテゴリの画像","placeholder":"data:image/svg+xml;base64,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"}]}]}]}]]}]}]}],["$","$L1d","ad-on-advice-list-8",{"id":"ad-on-advice-list-8"}],["$","div",null,{"children":["$","$L7",null,{"href":"/advice/4lEdlX0BTqPwDZPuymBG","children":["$","div",null,{"className":"flex items-center py-4","children":[["$","div",null,{"className":"flex-1","children":[["$","div",null,{"className":"mb-1","children":"数Ⅲについて"}],["$","div",null,{"className":"text-xs text-caption line-clamp-2 mb-1","children":"この質問に素直に答えるなら余裕で習得できるよ🙆‍♂️\n\nただ、前提として1A2Bが正しく理解できている必要があるよ!\n数3の範囲について少し説明するね。\n\n\n①平面上の曲線\n楕円とか双極線っていう、円の上位互換みたいなやつが出てくるよ〜。\n→数2の図形と方程式の応用だからそこがしっかり出来てないとダメ🙅‍♂️\n\n\n②複素数平面\n複素数を図形的に扱っていく単元だよ!図形を回転させれるようになるね🙆‍♂️\n→数2のいろいろな式の範囲の複素数がマスター出来てないと🙅‍♂️\n\n\n③関数と極限\n数2指数関数、対数関数、三角関数、数B数列ができたら、それを無限大までビヨーンって伸ばすとどうなるのってお話しだね。\n→上に書いた単元はマスターしよう!\n\n\n④微分\n今までの微分より関数が複雑になっていくよ!でもパターンがあるから網羅できれば大丈夫👌\n→数Bの微分をマスターしておこう!\n\n\n⑤積分\n体積とか曲線の長さを求められるようになるよ🙆‍♂️簡単ではあるけど計算が面倒になるから計算力も必要!\n→数Bの積分をマスターしておこう!"}],["$","div",null,{"className":"flex mb-1","children":[["$","svg",null,{"stroke":"currentColor","fill":"currentColor","strokeWidth":"0","viewBox":"0 0 24 24","className":"text-subPrimary mr-1","children":["$undefined",[["$","path","0",{"fill":"none","d":"M0 0h24v24H0V0z","children":[]}],["$","path","1",{"d":"M12 6c1.1 0 2 .9 2 2s-.9 2-2 2-2-.9-2-2 .9-2 2-2m0 10c2.7 0 5.8 1.29 6 2H6c.23-.72 3.31-2 6-2m0-12C9.79 4 8 5.79 8 8s1.79 4 4 4 4-1.79 4-4-1.79-4-4-4zm0 10c-2.67 0-8 1.34-8 4v2h16v-2c0-2.66-5.33-4-8-4z","children":[]}]]],"style":{"color":"$undefined"},"height":16,"width":16,"xmlns":"http://www.w3.org/2000/svg"}],["$","div",null,{"className":"text-xs","children":["東京工業大学物質理工学院"," ","yuya"]}]]}],["$","div",null,{"className":"flex justify-between","children":[["$","div",null,{"className":"flex","children":[["$","svg",null,{"stroke":"currentColor","fill":"currentColor","strokeWidth":"0","viewBox":"0 0 24 24","className":"text-subPrimary mr-1","children":["$undefined",[["$","path","0",{"fill":"none","d":"M0 0h24v24H0z","children":[]}],["$","path","1",{"d":"M16.5 6v11.5c0 2.21-1.79 4-4 4s-4-1.79-4-4V5a2.5 2.5 0 0 1 5 0v10.5c0 .55-.45 1-1 1s-1-.45-1-1V6H10v9.5a2.5 2.5 0 0 0 5 0V5c0-2.21-1.79-4-4-4S7 2.79 7 5v12.5c0 3.04 2.46 5.5 5.5 5.5s5.5-2.46 5.5-5.5V6h-1.5z","children":[]}]]],"style":{"color":"$undefined"},"height":16,"width":16,"xmlns":"http://www.w3.org/2000/svg"}],["$","div",null,{"className":"text-xs mr-2","children":23}],["$","svg",null,{"stroke":"currentColor","fill":"currentColor","strokeWidth":"0","viewBox":"0 0 24 24","className":"text-subPrimary mr-1","children":["$undefined",[["$","path","0",{"fill":"none","d":"M0 0h24v24H0z","children":[]}],["$","path","1",{"d":"M16.5 3c-1.74 0-3.41.81-4.5 2.09C10.91 3.81 9.24 3 7.5 3 4.42 3 2 5.42 2 8.5c0 3.78 3.4 6.86 8.55 11.54L12 21.35l1.45-1.32C18.6 15.36 22 12.28 22 8.5 22 5.42 19.58 3 16.5 3zm-4.4 15.55-.1.1-.1-.1C7.14 14.24 4 11.39 4 8.5 4 6.5 5.5 5 7.5 5c1.54 0 3.04.99 3.57 2.36h1.87C13.46 5.99 14.96 5 16.5 5c2 0 3.5 1.5 3.5 3.5 0 2.89-3.14 5.74-7.9 10.05z","children":[]}]]],"style":{"color":"$undefined"},"height":16,"width":16,"xmlns":"http://www.w3.org/2000/svg"}],["$","div",null,{"className":"text-xs mr-2","children":5}]]}],["$","div",null,{"className":"text-xs rounded-lg border border-text px-4","children":"理系数学"}]]}]]}],["$","div",null,{"className":"ml-3","children":["$","div",null,{"className":"bg-caption w-20 h-20 rounded-sm overflow-hidden","children":["$","div",null,{"className":"w-full h-full relative","children":["$","$L8",null,{"src":"/images/advice-category/math/math4.jpg","fill":true,"style":{"objectFit":"cover"},"sizes":"100%","alt":"理系数学カテゴリの画像","placeholder":"data:image/svg+xml;base64,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"}]}]}]}]]}]}]}],["$","div",null,{"children":["$","$L7",null,{"href":"/advice/xPYHS2h9xqQOsIXkTtDO","children":["$","div",null,{"className":"flex items-center py-4","children":[["$","div",null,{"className":"flex-1","children":[["$","div",null,{"className":"mb-1","children":"数学が苦手だけど得意になりたい"}],["$","div",null,{"className":"text-xs text-caption line-clamp-2 mb-1","children":"非常に個人的な考えですが、数学が苦手な人はどうしてこの公式を使うのか、どうしてこういう解法を使うのか、がきちんと理解できていないと思います。問題集に似た問題があって、そこではこうやってたから…。この分野で習ったのは、この公式だから…。こんな感じの弱い理論で解法を模索してたりしませんか?MARCHレベルまでは、これでも行けますが、そこから上は無理です。まして、東大は不可能です。京大の数学は最近カスみたいになってますが、東大は相変らず難しいので。\nでは、どうしたらいいのか。\n私のおすすめは別冊ノートを作って、出来なかった問題について、なるべく抽象的にその解法を書き、その解法になった理由やどうしてその公式を使うのかも合わせて書くことです。例えば、簡単な例で行けば、「cos(a+b)-cos(a-b)=0は、和の形になってるので解けないが、積の形にすれば解けるので、和積公式を使う」、「この事象が起こる確率を求めたいが、あまりにも複雑なので、余事象から間接的に求められないかどうか考える」といった感じです。\nこれを頭の中でできるようになれば、東大は受かります。多分。"}],["$","div",null,{"className":"flex mb-1","children":[["$","svg",null,{"stroke":"currentColor","fill":"currentColor","strokeWidth":"0","viewBox":"0 0 24 24","className":"text-subPrimary mr-1","children":["$undefined",[["$","path","0",{"fill":"none","d":"M0 0h24v24H0V0z","children":[]}],["$","path","1",{"d":"M12 6c1.1 0 2 .9 2 2s-.9 2-2 2-2-.9-2-2 .9-2 2-2m0 10c2.7 0 5.8 1.29 6 2H6c.23-.72 3.31-2 6-2m0-12C9.79 4 8 5.79 8 8s1.79 4 4 4 4-1.79 4-4-1.79-4-4-4zm0 10c-2.67 0-8 1.34-8 4v2h16v-2c0-2.66-5.33-4-8-4z","children":[]}]]],"style":{"color":"$undefined"},"height":16,"width":16,"xmlns":"http://www.w3.org/2000/svg"}],["$","div",null,{"className":"text-xs","children":["京都大学経済学部"," ","fu"]}]]}],["$","div",null,{"className":"flex justify-between","children":[["$","div",null,{"className":"flex","children":[["$","svg",null,{"stroke":"currentColor","fill":"currentColor","strokeWidth":"0","viewBox":"0 0 24 24","className":"text-subPrimary mr-1","children":["$undefined",[["$","path","0",{"fill":"none","d":"M0 0h24v24H0z","children":[]}],["$","path","1",{"d":"M16.5 6v11.5c0 2.21-1.79 4-4 4s-4-1.79-4-4V5a2.5 2.5 0 0 1 5 0v10.5c0 .55-.45 1-1 1s-1-.45-1-1V6H10v9.5a2.5 2.5 0 0 0 5 0V5c0-2.21-1.79-4-4-4S7 2.79 7 5v12.5c0 3.04 2.46 5.5 5.5 5.5s5.5-2.46 5.5-5.5V6h-1.5z","children":[]}]]],"style":{"color":"$undefined"},"height":16,"width":16,"xmlns":"http://www.w3.org/2000/svg"}],["$","div",null,{"className":"text-xs mr-2","children":8}],["$","svg",null,{"stroke":"currentColor","fill":"currentColor","strokeWidth":"0","viewBox":"0 0 24 24","className":"text-subPrimary mr-1","children":["$undefined",[["$","path","0",{"fill":"none","d":"M0 0h24v24H0z","children":[]}],["$","path","1",{"d":"M16.5 3c-1.74 0-3.41.81-4.5 2.09C10.91 3.81 9.24 3 7.5 3 4.42 3 2 5.42 2 8.5c0 3.78 3.4 6.86 8.55 11.54L12 21.35l1.45-1.32C18.6 15.36 22 12.28 22 8.5 22 5.42 19.58 3 16.5 3zm-4.4 15.55-.1.1-.1-.1C7.14 14.24 4 11.39 4 8.5 4 6.5 5.5 5 7.5 5c1.54 0 3.04.99 3.57 2.36h1.87C13.46 5.99 14.96 5 16.5 5c2 0 3.5 1.5 3.5 3.5 0 2.89-3.14 5.74-7.9 10.05z","children":[]}]]],"style":{"color":"$undefined"},"height":16,"width":16,"xmlns":"http://www.w3.org/2000/svg"}],["$","div",null,{"className":"text-xs mr-2","children":2}]]}],["$","div",null,{"className":"text-xs rounded-lg border border-text px-4","children":"理系数学"}]]}]]}],["$","div",null,{"className":"ml-3","children":["$","div",null,{"className":"bg-caption w-20 h-20 rounded-sm overflow-hidden","children":["$","div",null,{"className":"w-full h-full relative","children":["$","$L8",null,{"src":"/images/advice-category/math/math1.jpg","fill":true,"style":{"objectFit":"cover"},"sizes":"100%","alt":"理系数学カテゴリの画像","placeholder":"data:image/svg+xml;base64,CiAgICAgIDxzdmcgd2lkdGg9IjEyOCIgaGVpZ2h0PSIxMjgiIHZlcnNpb249IjEuMSIgeG1sbnM9Imh0dHA6Ly93d3cudzMub3JnLzIwMDAvc3ZnIiB4bWxuczp4bGluaz0iaHR0cDovL3d3dy53My5vcmcvMTk5OS94bGluayI+CiAgICAgICAgPGRlZnM+CiAgICAgICAgICA8bGluZWFyR3JhZGllbnQgaWQ9ImciPgogICAgICAgICAgICA8c3RvcCBzdG9wLWNvbG9yPSIjZDFkNWRiIiBvZmZzZXQ9IjIwJSIgLz4KICAgICAgICAgICAgPHN0b3Agc3RvcC1jb2xvcj0iI2YzZjRmNiIgb2Zmc2V0PSI1MCUiIC8+CiAgICAgICAgICAgIDxzdG9wIHN0b3AtY29sb3I9IiNkMWQ1ZGIiIG9mZnNldD0iNzAlIiAvPgogICAgICAgICAgPC9saW5lYXJHcmFkaWVudD4KICAgICAgICA8L2RlZnM+CiAgICAgICAgPHJlY3Qgd2lkdGg9IjEyOCIgaGVpZ2h0PSIxMjgiIGZpbGw9IiNkMWQ1ZGIiIC8+CiAgICAgICAgPHJlY3QgaWQ9InIiIHdpZHRoPSIxMjgiIGhlaWdodD0iMTI4IiBmaWxsPSJ1cmwoI2cpIiAvPgogICAgICAgIDxhbmltYXRlIHhsaW5rOmhyZWY9IiNyIiBhdHRyaWJ1dGVOYW1lPSJ4IiBmcm9tPSItMTI4IiB0bz0iMTI4IiBkdXI9IjFzIiByZXBlYXRDb3VudD0iaW5kZWZpbml0ZSIgLz4KICAgICAgPC9zdmc+"}]}]}]}]]}]}]}]]}]}]]}]}]