{"id":413,"date":"2025-10-11T15:26:08","date_gmt":"2025-10-11T15:26:08","guid":{"rendered":"http:\/\/saegil-lab.kr\/?p=413"},"modified":"2025-10-25T21:01:01","modified_gmt":"2025-10-25T12:01:01","slug":"latexpage-%ec%9b%90%ec%9d%98-%eb%a9%b4%ec%a0%81-spi-r2-%ec%a6%9d%eb%aa%85-3","status":"publish","type":"post","link":"https:\/\/saegil-lab.kr\/?p=413","title":{"rendered":"\uc6d0\uc758 \uba74\uc801 \"S=\pi r^2\" \uc99d\uba85 3"},"content":{"rendered":"\n

<\/p>\n\n\n

\n
\"\"<\/figure>\n<\/div>\n\n\n

\uc704\uc758 \uadf8\ub9bc\uc740 \ubc18\uc9c0\ub984\uc774 \"r\"\uc778 \uc6d0\uc744 12\ub4f1\ubd84\ud558\uace0 \ub0b4\ubd80\uc5d0 12\uac1c\uc758 \uc0bc\uac01\ud615\uc744 \uadf8\ub9b0 \uadf8\ub9bc\uc774\ub2e4. \uc774 \uacbd\uc6b0 \uc6d0\uc758 \uc911\uc2ec\uc5d0\uc11c \uc0bc\uac01\ud615\uc758 \uc911\uc2ec\uac01\uc740 \"\frac{2\pi}{12}\" \ud55c \ubcc0\uc758 \uae38\uc774\uac00 \uac01\uac01 \"r\"\uc778 \uc0bc\uac01\ud615\uc774 \ub418\ubbc0\ub85c 1\uac1c\uc758 \uc0bc\uac01\ud615\uc758 \uba74\uc801 \"S_1\"\uc740 \ub2e4\uc74c\uacfc \uac19\ub2e4.<\/p>\n\n\n\n

  <\/span>   <\/span>\"\[ S_1 = \frac{1}{2}r^2 \sin\left( \frac{2\pi}{12} \right)\]\"<\/p><\/p>\n\n\n\n

\uc704\uc758 \uacbd\uc6b0\ub97c \ub354 \uc77c\ubc18\ud654 \uc2dc\ucf1c \uc6d0\uc744 \uc815 \"n\" \uac01\ud615\uc73c\ub85c \uadfc\uc0ac\uc2dc\ucf30\uc744 \ub54c \"n\"\uac1c\uc758 \uc0bc\uac01\ud615\uc73c\ub85c \ub098\ud0c0\ub0bc \uc218 \uc788\ub2e4. \uadf8 \uc0bc\uac01\ud615 1\uac1c\uc758 \uba74\uc801\uc744 \"S_1\"\uc774\ub77c\uace0 \ud558\uba74 \ub2e4\uc74c\uacfc \uac19\uc774 \uad6c\ud560 \uc218 \uc788\ub2e4.<\/p>\n\n\n\n

  <\/span>   <\/span>\"\[ S_1 = \frac{1}{2} r^2 \sin \left( \frac{2\pi}{n}\right) \]\"<\/p><\/p>\n\n\n\n

\uac01\uac01\uc758 \uc0bc\uac01\ud615\uc744 \ubaa8\ub450 \ub354\ud55c \uc0bc\uac01\ud615\uc758 \uba74\uc801\uc744 \"S_n\"\uc774\ub77c\uace0 \ud558\uba74 \ub2e4\uc74c\uacfc \uac19\uc774 \uc4f8 \uc218 \uc788\ub2e4.<\/p>\n\n\n\n

  <\/span>   <\/span>\"\[ S_n = n \cdot \frac{1}{2} r^2 \sin\left( \frac{2\pi}{n} \right) \]\"<\/p><\/p>\n\n\n\n

\"n\"\uc744 \ubb34\ud55c\ub300\ub85c \ubcf4\ub0b4\uba74 \"S_n\"\uc740 \uc6d0\uc758 \uba74\uc801 \"S\"\ub85c \uadfc\uc0ac\uc2dc\ud0ac \uc218 \uc788\ub2e4.<\/p>\n\n\n\n

  <\/span>   <\/span>\"\[ S= \lim_{n \rightarrow \infty} S_n = \frac{1}{2} r^2 \lim_{n \rightarrow \infty} n \sin \left( \frac{2\pi}{n}\right)\]\"<\/p><\/p>\n\n\n\n

\"\frac{2\pi}{n} = \theta\"\ub77c\uace0 \ud558\uba74 \"n= \frac{2\pi}{\theta}\"\uac00 \ub418\uace0 \"n \rightarrow \infty\"\uc77c \ub54c \"\theta \rightarrow 0\"\uc774\uac00 \ub418\ubbc0\ub85c \uc6d0\uc758 \uba74\uc801\uc740 \ub2e4\uc74c\uacfc \uac19\uc774 \uad6c\ud560 \uc218 \uc788\ub2e4.<\/p>\n\n\n\n

  <\/span>   <\/span>\"\[ S = \frac{1}{2} r^2 \lim_{\theta \rightarrow 0} \frac{2 \pi}{\theta} \sin \theta = \pi r^2 \lim_{\theta \rightarrow 0} \frac{\sin \theta}{\theta} \]\"<\/p><\/p>\n\n\n\n

\"\lim_{\theta \rightarrow 0} \frac{\sin \theta}{\theta} = 1\"[link]<\/a>\uc774\ubbc0\ub85c \uc6d0\uc758 \uba74\uc801\uc740 \ub2e4\uc74c\uacfc \uac19\ub2e4.<\/p>\n\n\n\n

  <\/span>   <\/span>\"\[ S= \pi r^2\]\"<\/p><\/p>\n\n\n\n

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

\uc704\uc758 \uadf8\ub9bc\uc740 \ubc18\uc9c0\ub984\uc774 \uc778 \uc6d0\uc744 12\ub4f1\ubd84\ud558\uace0 \ub0b4\ubd80\uc5d0 12\uac1c\uc758 \uc0bc\uac01\ud615\uc744 \uadf8\ub9b0 \uadf8\ub9bc\uc774\ub2e4. \uc774 \uacbd\uc6b0 \uc6d0\uc758 \uc911\uc2ec\uc5d0\uc11c \uc0bc\uac01\ud615\uc758 \uc911\uc2ec\uac01\uc740 \ud55c \ubcc0\uc758 \uae38\uc774\uac00 \uac01\uac01 \uc778 \uc0bc\uac01\ud615\uc774 \ub418\ubbc0\ub85c 1\uac1c\uc758 \uc0bc\uac01\ud615\uc758 \uba74\uc801 \uc740 \ub2e4\uc74c\uacfc \uac19\ub2e4.     \uc704\uc758 \uacbd\uc6b0\ub97c \ub354 \uc77c\ubc18\ud654 \uc2dc\ucf1c \uc6d0\uc744 \uc815 \uac01\ud615\uc73c\ub85c … \uacc4\uc18d \uc77d\uae30 →<\/span><\/a><\/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":[21,20,19,18],"class_list":["post-413","post","type-post","status-publish","format-standard","hentry","category-13","tag-pi","tag-pi-r2","tag-19","tag-18"],"_links":{"self":[{"href":"https:\/\/saegil-lab.kr\/index.php?rest_route=\/wp\/v2\/posts\/413","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=413"}],"version-history":[{"count":15,"href":"https:\/\/saegil-lab.kr\/index.php?rest_route=\/wp\/v2\/posts\/413\/revisions"}],"predecessor-version":[{"id":696,"href":"https:\/\/saegil-lab.kr\/index.php?rest_route=\/wp\/v2\/posts\/413\/revisions\/696"}],"wp:attachment":[{"href":"https:\/\/saegil-lab.kr\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=413"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/saegil-lab.kr\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=413"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/saegil-lab.kr\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=413"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}