{"id":962,"date":"2025-11-21T17:22:35","date_gmt":"2025-11-21T08:22:35","guid":{"rendered":"http:\/\/saegil-lab.kr\/?p=962"},"modified":"2026-03-11T19:33:49","modified_gmt":"2026-03-11T10:33:49","slug":"%ec%82%bc%ea%b0%81%ed%95%a8%ec%88%98-fx-tan-x-%ec%9d%98-%eb%af%b8%eb%b6%84","status":"publish","type":"post","link":"https:\/\/saegil-lab.kr\/?p=962","title":{"rendered":"\uc0bc\uac01\ud568\uc218 f(x) = tan x \uc758 \ubbf8\ubd84"},"content":{"rendered":"\n

<\/p>\n\n\n\n

  <\/span>   <\/span>\"\[ f(x) = \tan x = \frac{\sin x}{\cos x} \]\"<\/p><\/p>\n\n\n\n

  <\/span>   <\/span>\"\begin{align*}f'(x) &= (\tan x )' = \left(\frac{\sin x}{\cos x} \right)' \\&= \frac{(\sin x)' \cos x - \sin x (\cos x)'}{\cos^2 x} \\&= \frac{\cos^2 x + \sin^2 x}{\cos^2 x} \\&= \frac{1}{\cos^2 x} \\&= \sec^2 x\end{align*}\"<\/p><\/p>\n\n\n\n

\uc5ec\uae30\uc5d0\uc11c\ub294 \ub2e4\uc74c \uc2dd\uc744 \uc774\uc6a9\ud558\uc600\ub2e4.<\/p>\n\n\n\n

  <\/span>   <\/span>\"\[ \left [\frac{f(x)}{g(x)}\right ]' = \frac{f'(x) \cdot g(x) - f(x) \cdot g'(x)}{[g(x)]^2}\]\"<\/p><\/p>\n\n\n\n

  <\/span>   <\/span>\"\[ (\sin x)' = \cos x \]\"<\/p><\/p>\n\n\n\n

  <\/span>   <\/span>\"\[ (\cos x)' = - \sin x \]\"<\/p><\/p>\n\n\n\n

  <\/span>   <\/span>\"\[ \sin^2 x + \cos^2 x = 1\]\"<\/p><\/p>\n\n\n\n

  <\/span>   <\/span>\"\[ \sec x = \frac{1}{\cos x}\]\"<\/p><\/p>\n","protected":false},"excerpt":{"rendered":"

        \uc5ec\uae30\uc5d0\uc11c\ub294 \ub2e4\uc74c \uc2dd\uc744 \uc774\uc6a9\ud558\uc600\ub2e4.                    <\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[13],"tags":[72,73],"class_list":["post-962","post","type-post","status-publish","format-standard","hentry","category-13","tag-tan-x-","tag-73"],"_links":{"self":[{"href":"https:\/\/saegil-lab.kr\/index.php?rest_route=\/wp\/v2\/posts\/962","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/saegil-lab.kr\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/saegil-lab.kr\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/saegil-lab.kr\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/saegil-lab.kr\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=962"}],"version-history":[{"count":11,"href":"https:\/\/saegil-lab.kr\/index.php?rest_route=\/wp\/v2\/posts\/962\/revisions"}],"predecessor-version":[{"id":976,"href":"https:\/\/saegil-lab.kr\/index.php?rest_route=\/wp\/v2\/posts\/962\/revisions\/976"}],"wp:attachment":[{"href":"https:\/\/saegil-lab.kr\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=962"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/saegil-lab.kr\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=962"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/saegil-lab.kr\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=962"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}