{"id":3360,"date":"2008-06-11T02:25:00","date_gmt":"2008-06-10T17:25:00","guid":{"rendered":"https:\/\/mathematicians.korea.ac.kr\/ywkim\/?p=3360"},"modified":"2021-08-12T11:53:21","modified_gmt":"2021-08-12T02:53:21","slug":"%eb%af%b8%eb%b6%84%ea%b8%b0%ed%95%98%ed%95%99i-2k8-%eb%b4%84%ed%95%99%ea%b8%b0","status":"publish","type":"post","link":"https:\/\/mathematicians.korea.ac.kr\/ywkim\/2008\/06\/11\/%eb%af%b8%eb%b6%84%ea%b8%b0%ed%95%98%ed%95%99i-2k8-%eb%b4%84%ed%95%99%ea%b8%b0\/","title":{"rendered":"\ubbf8\ubd84\uae30\ud558\ud559I 2K8 \ubd04\ud559\uae30"},"content":{"rendered":"<p> (TableOfContents) <\/p>\n<div id=\"outline-container-orgce540da\" class=\"outline-2\">\n<h2 id=\"orgce540da\">\uacf5\uc9c0<\/h2>\n<div class=\"outline-text-2\" id=\"text-orgce540da\">\n<ul class=\"org-ul\">\n<li>\uc774\ubc88 \ud559\uae30 \uac15\uc758\ub97c \uc5f4\uc2ec\ud788 \ub4e4\uc5b4\uc900 \ud559\uc0dd\ub4e4\uc5d0\uac8c \uace0\ub9d9\ub2e4\ub294 \ub9d0\uc744 \uc804\ud569\ub2c8\ub2e4. \uc774\uc640 \ud568\uaed8 \uadf8 \ub3d9\uc548 \uac15\uc758\uc2dc\uac04 \uc911\uc5d0 \uac15\uc758\ub85d\uc5d0 \uc624\uc790 \ub4f1 \uace0\uce5c \uc810\uc744 \ubaa8\uc73c\uace0\uc790 \ud569\ub2c8\ub2e4. \uadf8\ub798\uc11c \uace0\uce58\ub294 \ub0b4\uc6a9\uc744 \uac15\uc758\ub85d\uc5d0 \uc798 \uc801\uc5b4\ub193\uc740 \uc0ac\ub78c\ub4e4\uc740 \ubc29\ud559\ub3d9\uc548 \uac15\uc758\ub85d\uc744 \ub0b4\uac8c \ube4c\ub824\uc8fc\uba74 \uc88b\uaca0\uc2b5\ub2c8\ub2e4. \ud604\uc7ac \ub450 \ud559\uc0dd\uc758 \uac15\uc758\ub85d\uc744 \ube4c\ub9ac\uaca0\ub2e4\uace0 \ub9d0\ud574 \ub193\uc740 \uc0c1\ud0dc\uc774\uc9c0\ub9cc \ub2e4\ub978 \ud559\uc0dd\ub4e4\ub3c4 \ube4c\ub824\uc8fc\uba74 \uace0\ub9d9\uaca0\uc2b5\ub2c8\ub2e4. \ube4c\ub824\uc904 \ud559\uc0dd\uc740 \uc218\ud559\uacfc \uc0ac\ubb34\uc2e4 \uc2e0\ubbf8\ud61c \uc120\uc0dd\ub2d8\uaed8 \uc81c\ucd9c\ud558\uba74 \ub418\uaca0\uace0\uc694, \ucc45 \uc548\ucabd\uba74\uc5d0 \uc774\ub984, \ud559\ubc88, e-mail, handphone \ub4f1\uc744 \uc801\uc5b4\uc8fc\uba74 \ub098\uc911\uc5d0 \ub3cc\ub824\uc8fc\ub294\ub370 \ub3c4\uc6c0\uc774 \ub420 \uac83\uc785\ub2c8\ub2e4.<\/li>\n<li>\uc774 \uac15\uc758\ub85d\uc744 \ub9cc\ub4e4\uace0 \uacc4\uc2dc\ub294 \uc591\uc131\ub355 \uad50\uc218\ub2d8\uaed8\uc11c \uc774 \uac15\uc758\ub85d\uc744 \uc218\uc815\ud558\ub294 \ub370 \ub3d9\ucc38\ud558\uc5ec \uc904 \ud559\uc0dd\ub4e4\uc744 \ucc3e\uc2b5\ub2c8\ub2e4. \uc774 \uc791\uc5c5\uc5d0\ub294 &#8221;&#8217;\ud0c0\uc790, \uadf8\ub9bc\uadf8\ub9ac\uae30&#8221;&#8217;\uc640 \ud568\uaed8 &#8221;&#8217;\uc774 \ucc45\uc758 \ub0b4\uc6a9\uc5d0\uc11c \uc5b4\ub824\uc6b4 \ubd80\ubd84\uc744 \uc9c0\uc801\ud574 \uc8fc\ub294&#8221;&#8217; \uac83\uc774 \uc788\uc2b5\ub2c8\ub2e4. \uc774 \uac00\uc6b4\ub370 \uc790\uc2e0\uc774 \uad00\uc2ec\uc788\ub294 \uac83 \ub9cc\uc744 \ub3c4\uc6b0\uba74 \ub429\ub2c8\ub2e4. \uc2dc\ud5d8 \uc8fc \uc8fc\ub9d0\uae4c\uc9c0 ywkim@korea.ac.kr \ub610\ub294 sdyang@korea.ac.kr \ub85c \uc5f0\ub77d\uc8fc\uba74 \ub429\ub2c8\ub2e4.\n<ul class=\"org-ul\">\n<li>\ud2b9\ud788 2\ud559\uae30 \ubbf8\ubd84\uae30\ud558 \uac15\uc758\ub97c \uc218\uac15\ud558\ub294 \ud559\uc0dd\uc740 \uc774 \uc791\uc5c5\uc5d0 \ub3d9\ucc38\ud558\ub294 \uac83\uc774 \uacf5\ubd80(\uc131\uc801?)\uc5d0 \ub9ce\uc740 \ub3c4\uc6c0\uc774 \ub420 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/li>\n<\/ul>\n<\/li>\n<li>\uc2dc\ud5d8\uc740 6\uc6d4 11\uc77c \uac15\uc758\uc2dc\uac04 \uc911\uc5d0 \uac15\uc758\uc2e4\uc5d0\uc11c \ubd05\ub2c8\ub2e4.<\/li>\n<li>Office Hour\ub294 \uc6d4,\uc218 \ubbf8\ubd84\uae30\ud558\ud559 \uac15\uc758 \ub05d\ub098\uace0(7\uad50\uc2dc) \uc785\ub2c8\ub2e4. (\uac15\uc758\uc2dc\uac04 \ub05d\ub098\uc790\ub9c8\uc790 \ub0b4\uac8c \ub9d0\ud558\uc138\uc694. \uc544\ubb34\ub3c4 \ub9d0\ud558\uc9c0 \uc54a\uc73c\uba74 \ubc14\ub85c \ubb38 \ub2eb\uc2b5\ub2c8\ub2e4.)<\/li>\n<li>\uc911\uac04\uc2dc\ud5d8\uc740 4\uc6d4 16\uc77c \uc218\uc694\uc77c \uac15\uc758\uc2dc\uac04\uc5d0 \ubd05\ub2c8\ub2e4.\n<ul class=\"org-ul\">\n<li>\uc608\uc804 \uc2dc\ud5d8\ubb38\uc81c \ubaa8\uc74c\uc774 \uc788\uc5b4\uc694. \uc5b4\ub5a4 \uac83\uc740 \ud480\uc774\ub3c4&#x2026;: <a href=\"http:\/\/math.korea.ac.kr\/~ywkim\/mawiki\/wiki.php?MyMisc#s-1.1.2\">http:\/\/math.korea.ac.kr\/~ywkim\/mawiki\/wiki.php?MyMisc#s-1.1.2<\/a><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<div id=\"outline-container-orgfd908bc\" class=\"outline-2\">\n<h2 id=\"orgfd908bc\">\uac15\uc758 \uc790\ub8cc<\/h2>\n<div class=\"outline-text-2\" id=\"text-orgfd908bc\">\n<ul class=\"org-ul\">\n<li>[<a href=\"http:\/\/math.korea.ac.kr\/~ywkim\/courses\/2k8dg\/la_crashguide.pdf\">http:\/\/math.korea.ac.kr\/~ywkim\/courses\/2k8dg\/la_crashguide.pdf<\/a> \uc120\ud615\ub300\uc218 \uc694\uc57d \ud30c\uc77c]<\/li>\n<li>\uc9c0\ub09c \uc2dc\uac04 \uac15\uc758\ub85d:\n<ul class=\"org-ul\">\n<li>\uace1\uc120\uc758 Taylor\uc804\uac1c: <a href=\"https:\/\/mathematicians.korea.ac.kr\/ywkim\/wp-content\/uploads\/sites\/8\/attachments\/DiffGeometry2k8Spr\/dg2k8_ln_2a1_curve_misc.pdf\">dg2k8_ln_2a1_curve_misc.pdf<\/a><\/li>\n<li>\ub2e4\ub974\ubd80(Darboux)\uc758 Frenet\uacf5\uc2dd: <a href=\"https:\/\/mathematicians.korea.ac.kr\/ywkim\/wp-content\/uploads\/sites\/8\/attachments\/DiffGeometry2k8Spr\/dg2k8_ln_2a2_darboux_trihedron.pdf\">dg2k8_ln_2a2_darboux_trihedron.pdf<\/a><\/li>\n<li>Circular Helix\ub97c TNB \uc88c\ud45c\uc5d0\uc11c \ubc14\ub77c\ubcf8 \ubaa8\uc591 \uacc4\uc0b0 Mathematica \ud30c\uc77c: <a href=\"https:\/\/mathematicians.korea.ac.kr\/ywkim\/wp-content\/uploads\/sites\/8\/attachments\/DiffGeometry2k8Spr\/helix_in_tnb.nb\">helix_in_tnb.nb<\/a><\/li>\n<\/ul>\n<\/li>\n<li>\ubbf8\ubd84\uae30\ud558 [wiki:DiffGeometry2k8SprProb \ubcf4\ucda9 \uc5f0\uc2b5\ubb38\uc81c \ud398\uc774\uc9c0] \uc785\ub2c8\ub2e4. \uc219\uc81c\ub294 \uc544\ub2d9\ub2c8\ub2e4. &#8221;&#8217;\ubb38\uc81c\ub97c \ud47c \uc0ac\ub78c\ub4e4\uc740 \ub2f5\uc744 \uc62c\ub824\uc8fc\uc138\uc694. \ud480\uc774\ub294 \uc548 \uc62c\ub824\ub3c4&#x2026;&#8221;&#8217;<\/li>\n<li>section 1 \uc785\ub2c8\ub2e4. [<a href=\"http:\/\/math.korea.ac.kr\/~ywkim\/courses\/2k8dg\/dg2k8_ln_11_plane_what_is_curvature.pdf\">http:\/\/math.korea.ac.kr\/~ywkim\/courses\/2k8dg\/dg2k8_ln_11_plane_what_is_curvature.pdf<\/a> \uace1\ub960\uc774\ub780 \ubb34\uc5c7\uc778\uac00?]<\/li>\n<li>\uccab \uac15\uc758\uc790\ub8cc\ub97c \uc5c5\ud569\ub2c8\ub2e4. [<a href=\"http:\/\/math.korea.ac.kr\/~ywkim\/courses\/2k8dg\/dg2k8_ln_01_introduction.pdf\">http:\/\/math.korea.ac.kr\/~ywkim\/courses\/2k8dg\/dg2k8_ln_01_introduction.pdf<\/a> Introduction]<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<div id=\"outline-container-org6d90654\" class=\"outline-2\">\n<h2 id=\"org6d90654\">\uc9c8\ubb38\ud558\uc138\uc694 Q&amp;A<\/h2>\n<div class=\"outline-text-2\" id=\"text-org6d90654\">\n<p> Q: \uc9c8\ubb38 \ubbf8\ubd84\uae30\ud558 \uc5f0\uc2b5\ubb38\uc81c\uc5d0 \uad00\ud55c \uc9c8\ubb38\uc785\ub2c8\ub2e4^^ \uac15\uc758\ub85d 80\ud398\uc774\uc9c0\uc5d0 \uc788\ub294 16\ubc88 \ubb38\uc81c\uc5d0\uc11c $ [-1,1] $ \uc5d0\uc11c \uc815\uc758 \ub418\uace0 $ 1 $ \uacfc $ -1 $ \uc5d0\uc11c\uc758 \ud568\uc218\uac12\uc774 $ b $ \uc778 \ud568\uc218\ub4e4\uc758 \uc9d1\ud569 $ F $ \uc911(\ubaa8\ub4e0 \ud568\uc218\ub294 2\ubc88 \ubbf8\ubd84 \uac00\ub2a5, 2\uacc4\ub3c4\ud568\uc218\ub294 \uc5f0\uc18d)\uc77c\ub54c \uadf8\uac83\uc744 $ x $ \ucd95\uc73c\ub85c \ud68c\uc804\uc2dc\ucf1c \uc5bb\uc5b4\uc9c4 \ud68c\uc804 \uace1\uba74\uc758 \ub113\uc774\ub97c $ A(f) $ \ub77c \ud560 \ub54c \uc5b4\ub5a4 $ g $ \uac00 \uc788\uc5b4 $ A(g)&le; A(f) $ (\ubaa8\ub4e0 $ F $ \uc758 $ f $ \uc5d0 \ub300\ud574)\ub77c\uba74 \uc989 \ucd5c\uc18c\uc774\uba74 $ g $ \ub294 \ud604\uc218\uba74 \uc77c\ubd80\uc784\uc744 \ubcf4\uc774\ub77c\ub294 \uac83\uc778\ub370 \uc5b4\ub5a4 \uc2dd\uc73c\ub85c \uc811\uadfc \ud574\uc57c \ud560\uc9c0 \uc798 \ubaa8\ub974\uaca0\uc2b5\ub2c8\ub2e4&#x2026; <\/p>\n<p> \ub2f5\ubcc0 \ubd80\ud0c1\ub4dc\ub9ac\uaca0\uc2b5\ub2c8\ub2e4.^^ <\/p>\n<p> \uac10\uc0ac\ud569\ub2c8\ub2e4. <\/p>\n<p> A: \uc774 \ubb38\uc81c\ub294 \uc55e\uc758 \uadf9\uc18c\uace1\uba74\uc758 \ubc29\uc815\uc2dd\uc744 \uc720\ub3c4\ud558\ub294 \uacfc\uc815\uc744 \ud68c\uc804\uba74\uc5d0 \ub300\ud574\uc11c \uc9c1\uc811 \uc801\uc6a9\ud574 \ubcf4\ub294 \ubb38\uc81c\uc785\ub2c8\ub2e4. \uacbd\uacc4\uc810 $ (-1,b), (1,b) $ \ub97c \uc9c0\ub098\ub294 \uadf8\ub798\ud504\ub97c \uac16\ub294 \ud568\uc218 $ g$ \uc5d0 \ub300\ud558\uc5ec $ g$ \ub97c \uc870\uae08 \uc6c0\uc9c1\uc5ec \ubd05\ub2c8\ub2e4. \uc989 $ g(x)+th(x) $ \ub77c\ub294 \ud568\uc218\ub97c \uc0dd\uac01\ud574 \ubcf4\uc9c0\uc694. \uc5ec\uae30\uc11c $ h(-1)=h(1)=0$ \uc774 \ub418\ub294 \uac83\ub9cc\uc744 \uc0dd\uac01\ud569\ub2c8\ub2e4. \uadf8\ub807\uac8c \ud574\uc11c $ g(x)+th(x) $ \ub294 \uacc4\uc18d \uac19\uc740 \uacbd\uacc4\uc810\uc744 \uc9c0\ub098\ub294 \uadf8\ub798\ud504\ub97c \uac16\uac8c \ub418\uc9c0\uc694. \uadf8\ub9ac\uace0 \ud68c\uc804\uba74\uc758 \ub113\uc774\ud568\uc218\ub97c \uad6c\ud558\uace0 (1\ud559\ub144 \ubbf8\uc801\ubd84\uc758 \ud68c\uc804\uba74\uc758 \ub113\uc774\ub97c \uc368\uc11c), \uc774 \ub113\uc774 $ A(t)$ \uac00 $ t=0 $ \uc77c \ub54c \ucd5c\uc18c\uac12\uc744 \uac00\uc9c0\ubbc0\ub85c \ubbf8\ubd84\uc774 0\uc774\ub77c\uace0 \ub193\uace0 \uacc4\uc0b0\ud558\uba74 \uc704\uc640 \uac19\uc740 \uc784\uc758\uc758 $ C^2 $ \ud568\uc218 $ h $ \uc5d0 \ub300\ud558\uc5ec \uc774 \ubbf8\ubd84\uac12\uc774 0\uc774\ub77c\ub294 \uc870\uac74\uc774 $ g $ \uac00 \ub9cc\uc871\uc2dc\ucf1c\uc57c \ud560 \uc870\uac74\uc744 \ubbf8\ubd84\ubc29\uc815\uc2dd\uc73c\ub85c \uc90d\ub2c8\ub2e4. \uadf8 \ubc29\uc815\uc2dd\uc740 73\ucabd \ud55c \uac00\uc6b4\ub370 \uc788\ub294 \ubbf8\ubd84\ubc29\uc815\uc2dd\uacfc \ub611\uac19\uac8c \ub420\uac70\uc608\uc694. \uacbd\uacc4\uc870\uac74\uc744 \ub9cc\uc871\uc2dc\ud0a4\ub3c4\ub85d \uadf8\uac83\uc744 \ud480\uba74 \ub611\uac19\uc740 \ud604\uc218\uc120\uc744 \uc5bb\uac8c \ub418\uc9c0\uc694. \ub2e8\uc9c0 \uc774 \uacbd\uc6b0\uc5d0\ub294 $ 1 $ \uacfc $ -1 $ \uc5d0\uc11c \uac12\uc774 $ b $ \uc778 \ud604\uc218\uc120\uc774\uaca0\uc9c0\uc694. <\/p>\n<hr \/>\n<p> CategoryKUMath <\/p>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>(TableOfContents) \uacf5\uc9c0 \uc774\ubc88 \ud559\uae30 \uac15\uc758\ub97c \uc5f4\uc2ec\ud788 \ub4e4\uc5b4\uc900 \ud559\uc0dd\ub4e4\uc5d0\uac8c \uace0\ub9d9\ub2e4\ub294 \ub9d0\uc744 \uc804\ud569\ub2c8\ub2e4. \uc774\uc640 \ud568\uaed8 \uadf8 \ub3d9\uc548 \uac15\uc758\uc2dc\uac04 \uc911\uc5d0 \uac15\uc758\ub85d\uc5d0 \uc624\uc790 \ub4f1 \uace0\uce5c \uc810\uc744 \ubaa8\uc73c\uace0\uc790 \ud569\ub2c8\ub2e4. \uadf8\ub798\uc11c \uace0\uce58\ub294 \ub0b4\uc6a9\uc744 \uac15\uc758\ub85d\uc5d0 \uc798 \uc801\uc5b4\ub193\uc740 \uc0ac\ub78c\ub4e4\uc740 \ubc29\ud559\ub3d9\uc548 \uac15\uc758\ub85d\uc744 \ub0b4\uac8c \ube4c\ub824\uc8fc\uba74 \uc88b\uaca0\uc2b5\ub2c8\ub2e4. \ud604\uc7ac \ub450 \ud559\uc0dd\uc758 \uac15\uc758\ub85d\uc744 \ube4c\ub9ac\uaca0\ub2e4\uace0 \ub9d0\ud574 \ub193\uc740 \uc0c1\ud0dc\uc774\uc9c0\ub9cc \ub2e4\ub978 \ud559\uc0dd\ub4e4\ub3c4 \ube4c\ub824\uc8fc\uba74 \uace0\ub9d9\uaca0\uc2b5\ub2c8\ub2e4. \ube4c\ub824\uc904 \ud559\uc0dd\uc740 \uc218\ud559\uacfc \uc0ac\ubb34\uc2e4 \uc2e0\ubbf8\ud61c \uc120\uc0dd\ub2d8\uaed8 \uc81c\ucd9c\ud558\uba74 &#8230; <a title=\"\ubbf8\ubd84\uae30\ud558\ud559I 2K8 \ubd04\ud559\uae30\" class=\"read-more\" href=\"https:\/\/mathematicians.korea.ac.kr\/ywkim\/2008\/06\/11\/%eb%af%b8%eb%b6%84%ea%b8%b0%ed%95%98%ed%95%99i-2k8-%eb%b4%84%ed%95%99%ea%b8%b0\/\" aria-label=\"\ubbf8\ubd84\uae30\ud558\ud559I 2K8 \ubd04\ud559\uae30\uc5d0 \ub300\ud574 \ub354 \uc790\uc138\ud788 \uc54c\uc544\ubcf4\uc138\uc694\">\ub354 \uc77d\uae30<\/a><\/p>\n","protected":false},"author":7,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"ngg_post_thumbnail":0,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-3360","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"distributor_meta":false,"distributor_terms":false,"distributor_media":false,"distributor_original_site_name":"\uae40\uc601\uc6b1","distributor_original_site_url":"https:\/\/mathematicians.korea.ac.kr\/ywkim","push-errors":false,"_links":{"self":[{"href":"https:\/\/mathematicians.korea.ac.kr\/ywkim\/wp-json\/wp\/v2\/posts\/3360","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mathematicians.korea.ac.kr\/ywkim\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mathematicians.korea.ac.kr\/ywkim\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mathematicians.korea.ac.kr\/ywkim\/wp-json\/wp\/v2\/users\/7"}],"replies":[{"embeddable":true,"href":"https:\/\/mathematicians.korea.ac.kr\/ywkim\/wp-json\/wp\/v2\/comments?post=3360"}],"version-history":[{"count":1,"href":"https:\/\/mathematicians.korea.ac.kr\/ywkim\/wp-json\/wp\/v2\/posts\/3360\/revisions"}],"predecessor-version":[{"id":3361,"href":"https:\/\/mathematicians.korea.ac.kr\/ywkim\/wp-json\/wp\/v2\/posts\/3360\/revisions\/3361"}],"wp:attachment":[{"href":"https:\/\/mathematicians.korea.ac.kr\/ywkim\/wp-json\/wp\/v2\/media?parent=3360"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mathematicians.korea.ac.kr\/ywkim\/wp-json\/wp\/v2\/categories?post=3360"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mathematicians.korea.ac.kr\/ywkim\/wp-json\/wp\/v2\/tags?post=3360"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}