{"id":891,"date":"2025-11-21T09:44:34","date_gmt":"2025-11-21T00:44:34","guid":{"rendered":"http:\/\/saegil-lab.kr\/?p=891"},"modified":"2025-11-21T09:44:40","modified_gmt":"2025-11-21T00:44:40","slug":"%eb%af%b8%eb%b6%84%ec%9d%98-%ec%a0%95%ec%9d%98","status":"publish","type":"post","link":"https:\/\/saegil-lab.kr\/?p=891","title":{"rendered":"\ubbf8\ubd84\uc758 \uc815\uc758"},"content":{"rendered":"\n

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

[\uc774 \uae00\uc740 \uace0\ub4f1\ud559\uad50 \uc218\ud559\uc744 \uae30\ubc18\uc73c\ub85c \ub300\ud559\uc5d0\uc11c \ubb3c\ub9ac\ud559\uc744 \uacf5\ubd80\ud558\uae30 \uc704\ud55c \ud559\uc0dd\ub4e4\uc744 \uc704\ud55c \uc790\ub8cc\uc785\ub2c8\ub2e4.]<\/p>\n\n\n\n

\uc5b4\ub5a4 \ud568\uc218 \"f(x)\"\uc5d0\uc11c \uc5b4\ub290 \uc810 \"x\"\uc5d0\uc11c\uc758 \uc811\uc120\uc758 \uae30\uc6b8\uae30<\/p>\n\n\n\n

(1) <\/span>   <\/span>\"\begin{equation*}f'(x)=\frac{df(x)}{dx}= \lim_{h \rightarrow 0} \frac{f(x+h)-f(x)}{h}\end{equation*}\"<\/p><\/p>\n\n\n\n

(2) <\/span>   <\/span>\"\begin{equation*}f'(x)=\frac{df(x)}{dx}= \lim_{h \rightarrow 0} \frac{f(x)-f(x-h)}{h}\end{equation*}\"<\/p><\/p>\n\n\n\n

(3) <\/span>   <\/span>\"\begin{equation*}f'(x)=\frac{df(x)}{dx}= \lim_{h \rightarrow 0} \frac{f(x+h)-f(x-h)}{2h}\end{equation*}\"<\/p><\/p>\n\n\n\n

\uc608\uc81c : \"f(x) =x^2\"<\/p>\n\n\n\n

[\uc815\uc758 1]<\/p>\n\n\n\n

  <\/span>   <\/span>\"\begin{align*}f'(x) &=\lim_{h \rightarrow 0} \frac{f(x+h)-f(x)}{h} \\&=\lim_{h \rightarrow 0} \frac{(x+h)^2 - x^2}{h} \\&=\lim_{h \rightarrow 0} \frac{(x^2 + 2xh + h^2) - x^2}{h} \\&=\lim_{h \rightarrow 0} \frac{2xh + h^2}{h} \\&=\lim_{h \rightarrow 0} (2x + h) \\&= 2x\end{align*}\"<\/p><\/p>\n\n\n\n

[\uc815\uc758 2]<\/p>\n\n\n\n

  <\/span>   <\/span>\"\begin{align*}f'(x) &= \lim_{h \rightarrow 0} \frac{f(x)-f(x-h)}{h} \\&= \lim_{h \rightarrow 0} \frac{x^2 - (x-h)^2}{h} \\&= \lim_{h \rightarrow 0} \frac{x^2 - (x^2 - 2xh +h^2)}{h} \\&= \lim_{h \rightarrow 0} \frac{2xh - h^2}{h} \\&= \lim_{h \rightarrow 0} (2x - h) \\&= 2x\end{align*}\"<\/p><\/p>\n\n\n\n

[\uc815\uc758 3]<\/p>\n\n\n\n

  <\/span>   <\/span>\"\begin{align*}f'(x) &= \lim_{h \rigntarrow 0} \frac{f(x+h) - f(x-h)}{2h} \\&= \lim_{h \rightarrow 0} \frac{(x+h)^2 - (x-h)^2}{2h} \\&= \lim_{h \rightarrow 0} \frac{(x^2 + 2xh + h^2) - (x^2 - 2xh + h^2)}{2h}\\&= \lim_{h \rightarrow 0} \frac{4xh}{2h} \\&= 2x \end{align*}\"<\/p><\/p>\n\n\n\n



<\/p>\n","protected":false},"excerpt":{"rendered":"

[\uc774 \uae00\uc740 \uace0\ub4f1\ud559\uad50 \uc218\ud559\uc744 \uae30\ubc18\uc73c\ub85c \ub300\ud559\uc5d0\uc11c \ubb3c\ub9ac\ud559\uc744 \uacf5\ubd80\ud558\uae30 \uc704\ud55c \ud559\uc0dd\ub4e4\uc744 \uc704\ud55c \uc790\ub8cc\uc785\ub2c8\ub2e4.] \uc5b4\ub5a4 \ud568\uc218 \uc5d0\uc11c \uc5b4\ub290 \uc810 \uc5d0\uc11c\uc758 \uc811\uc120\uc758 \uae30\uc6b8\uae30 (1)   (2)   (3)   \uc608\uc81c : [\uc815\uc758 1]     [\uc815\uc758 2]     [\uc815\uc758 3]    <\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[13],"tags":[66,68,67],"class_list":["post-891","post","type-post","status-publish","format-standard","hentry","category-13","tag-66","tag-68","tag-67"],"_links":{"self":[{"href":"https:\/\/saegil-lab.kr\/index.php?rest_route=\/wp\/v2\/posts\/891","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=891"}],"version-history":[{"count":11,"href":"https:\/\/saegil-lab.kr\/index.php?rest_route=\/wp\/v2\/posts\/891\/revisions"}],"predecessor-version":[{"id":902,"href":"https:\/\/saegil-lab.kr\/index.php?rest_route=\/wp\/v2\/posts\/891\/revisions\/902"}],"wp:attachment":[{"href":"https:\/\/saegil-lab.kr\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=891"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/saegil-lab.kr\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=891"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/saegil-lab.kr\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=891"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}