{"id":1104,"date":"2025-11-25T18:02:20","date_gmt":"2025-11-25T09:02:20","guid":{"rendered":"http:\/\/saegil-lab.kr\/?p=1104"},"modified":"2026-03-11T19:32:06","modified_gmt":"2026-03-11T10:32:06","slug":"cos-x%ec%9d%98-%ea%b8%89%ec%88%98-%ec%a0%84%ea%b0%9c","status":"publish","type":"post","link":"https:\/\/saegil-lab.kr\/?p=1104","title":{"rendered":"cos x\uc758 \uae09\uc218 \ud45c\ud604"},"content":{"rendered":"\n

Maclaurin \uae09\uc218<\/p>\n\n\n\n

  <\/span>   <\/span>\"\[f(x) = f(0) + f'(0)x + \frac{f''(0)}{2!}x^2 + \frac{f'''(0)}{3!} x^3 + \cdots + \frac{f^{(n)}(0)}{n!} x^n + \cdots\]\"<\/p><\/p>\n\n\n\n

\n

\"f(x)=\cos x, \quad f(0) = 1\"<\/p>\n\n\n\n

\"f'(x) = -\sin x, \quad f'(0) = 0\"<\/p>\n\n\n\n

\"f''(x) = -\cos x, \quad f''(0) = -1\"<\/p>\n\n\n\n

\"f'''}(x) = \sin x, \quad f'''(0) = 0\"<\/p>\n\n\n\n

\"f^{(4)}(x) = \cos x, \quad f^{(4)} (0) = 1\"<\/p>\n<\/div><\/div>\n\n\n\n

\uc704 \uad00\uacc4\uc5d0\uc11c \"\cos x\"\ub97c \uae09\uc218\ub85c \ub098\ud0c0\ub0bc \ub54c \ubcf4\uc774\ub294 \"x\"\uc758 \ud640\uc218\ud56d\uc740 \ubaa8\ub450 0\uc774 \ub418\uace0, \uc9dd\uc218\ud56d(0\ud3ec\ud568)\uc740 1\uacfc -1\uc774 \ubc18\ubcf5\ub41c\ub2e4. \ub530\ub77c\uc11c \"\cos x\"\ub294 \ub2e4\uc74c\uacfc \uac19\uc774 \uae09\uc218\ub85c \ud45c\ud604\ud560 \uc218 \uc788\ub2e4.<\/p>\n\n\n\n

  <\/span>   <\/span>\"\[\cos x = 1 - \frac{x^2}{2!} + \frac{x^4}{4!} - \frac{x^6}{6!} + \cdots\]\"<\/p><\/p>\n","protected":false},"excerpt":{"rendered":"

Maclaurin \uae09\uc218     \uc704 \uad00\uacc4\uc5d0\uc11c \ub97c \uae09\uc218\ub85c \ub098\ud0c0\ub0bc \ub54c \ubcf4\uc774\ub294 \uc758 \ud640\uc218\ud56d\uc740 \ubaa8\ub450 0\uc774 \ub418\uace0, \uc9dd\uc218\ud56d(0\ud3ec\ud568)\uc740 1\uacfc -1\uc774 \ubc18\ubcf5\ub41c\ub2e4. \ub530\ub77c\uc11c \ub294 \ub2e4\uc74c\uacfc \uac19\uc774 \uae09\uc218\ub85c \ud45c\ud604\ud560 \uc218 \uc788\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":[],"class_list":["post-1104","post","type-post","status-publish","format-standard","hentry","category-13"],"_links":{"self":[{"href":"https:\/\/saegil-lab.kr\/index.php?rest_route=\/wp\/v2\/posts\/1104","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=1104"}],"version-history":[{"count":4,"href":"https:\/\/saegil-lab.kr\/index.php?rest_route=\/wp\/v2\/posts\/1104\/revisions"}],"predecessor-version":[{"id":1109,"href":"https:\/\/saegil-lab.kr\/index.php?rest_route=\/wp\/v2\/posts\/1104\/revisions\/1109"}],"wp:attachment":[{"href":"https:\/\/saegil-lab.kr\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1104"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/saegil-lab.kr\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1104"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/saegil-lab.kr\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1104"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}