{"id":10066,"date":"2012-01-21T02:30:00","date_gmt":"2012-01-21T02:30:00","guid":{"rendered":"http:\/\/melotopia.net\/b\/?p=10066"},"modified":"2012-01-21T02:30:00","modified_gmt":"2012-01-21T02:30:00","slug":"%ec%b9%bc%ec%a7%88-3%eb%b2%88%ec%9c%bc%eb%a1%9c-5%eb%aa%85%ec%9d%b4-%eb%82%98%eb%88%a0%eb%a8%b9%ea%b8%b0","status":"publish","type":"post","link":"http:\/\/melotopia.net\/b\/?p=10066","title":{"rendered":"\uce7c\uc9c8 3\ubc88\uc73c\ub85c 5\uba85\uc774 \ub098\ub220\uba39\uae30"},"content":{"rendered":"<div class=\"desc\">\n<a href=\"http:\/\/jinh.tistory.com\/549\" target=\"_blank\" title=\"[http:\/\/jinh.tistory.com\/549]\ub85c \uc774\ub3d9\ud569\ub2c8\ub2e4.\"><br \/>\n         http:\/\/jinh.tistory.com\/549<br \/>\n        <\/a><\/p>\n<p>        \ud558\ub098\uc758 \ucf00\uc774\ud06c\ub97c \uce7c\uc9c8 3\ubc88\uc73c\ub85c 5\uba85\uc774 \ub098\ub220\uba39\ub294 \ubc29\ubc95\uc744 \ucc3e\uc544\uc57c \ud55c\ub2e4.<\/p>\n<p>        \uadf8\ub798\uc11c \ub09c \ub2e4\uc74c\uacfc \uac19\uc740 \ud574\ubc95\uc744 \ucc3e\uc544\ubcf4\uc558\ub2e4.<\/p>\n<div class=\"imageblock center\" style=\"text-align: center; clear: both;\">\n<img loading=\"lazy\" decoding=\"async\" alt=\"\" filemime=\"\" filename=\"cfile25.uf@1621833E4F1A1C57126809.png\" height=\"283\" onclick=\"open_img('original\/1621833E4F1A1C57126809')\" src=\"image\/1621833E4F1A1C57126809\" style=\"cursor: pointer;max-width:100%;height:auto\" width=\"350\"\/>\n<\/div>\n<p>\n        \ube68\uac04\uc0c9 \uc120 A, B, C\ub97c \ub530\ub77c\uc11c 3\ubc88 \uce7c\uc9c8\ud558\uba74 \ub41c\ub2e4. \ubb38\uc81c\ub294 a\uc640 b\uc758 \uc704\uce58\uc774\ub2e4. a\ub294 \uc798\ub790\uc744 \ub54c \uc804\uccb4\uc758 1\/5\uac00 \ub418\ub294 \uc9c0\uc810\uc774\uc5b4\uc57c \ud558\uace0 b\ub294 \uc798\ub790\uc744 \ub54c \uc804\uccb4\uc758 2\/5\uac00 \ub418\ub294 \uc9c0\uc810\uc774\uc5b4\uc57c \ud55c\ub2e4. C\ub294 A\ub97c \uc798\ub77c\uc11c \uccd0\ub0b8 \ud6c4 \ub098\uba38\uc9c0 \ubd80\ubd84\uc744 \uc9c0\ub984\uc744 \ub530\ub77c \uc790\ub974\uba74 \ub41c\ub2e4.<\/p>\n<p>        \ubb3c\ub860 \uc774 \ubb38\uc81c\ub294 \uac04\ub2e8\ud55c \uc801\ubd84\uc744 \ud574\uc11c \ub2f5\uc744 \uad6c\ud560 \uc218 \uc788\ub2e4.<br \/>\n        <br \/>\n        \uc6d0\uc758 \ubc29\uc815\uc2dd\uc744 $$y = \\sqrt{1-x^2}$$ \uc73c\ub85c \uac00\uc815\ud558\uace0 \uac04\ub2e8\ud55c \uc801\ubd84\uc744 \ud558\uba74 (\uace0\ub4f1\ud559\uad50 \uc218\ud559\uc774\uba74 \ud480 \uc218 \uc788\ub2e4. \ubabb \ud480\uaca0\uc73c\uba74 \uc801\ubd84\ud45c \ucc3e\uc544\ubcf4\uc790.)<br \/>\n        <br \/>\n        $$\\cos^{-1}(a) &#8211; a\\sqrt{1-a^2} = 0.1\\pi$$<\/p>\n<p>        \ub9c8\ucc2c\uac00\uc9c0 \ubc29\ubc95\uc73c\ub85c b\ub3c4 \uad6c\ud560 \uc218 \uc788\ub294\ub370 \uc790\uc138\ud55c \uc124\uba85\uc740 \uc0dd\ub7b5\ud558\ub3c4\ub85d \ud558\uace0, \uc5b4\uca0c\ub4e0 \uc911\uc694\ud55c\uac74 \uc704\uc758 \ubc29\uc815\uc2dd\uc740 \ucd08\uc6d4\ubc29\uc815\uc2dd\uc774\ub77c \uadfc\uc758 \uacf5\uc2dd\uc774 \uc5c6\ub2e4. (5\ucc28\ubc29\uc815\uc2dd\ubcf4\ub2e4 \ud070 \ucc28\uc218\uc758 \ubc29\uc815\uc2dd\uc740 \uadfc\uc758 \uacf5\uc2dd\uc774 \uc5c6\ub294\ub370, \ucd08\uc6d4\ubc29\uc815\uc2dd\uc740 \ubb34\ud55c\ucc28\uc218 \ubc29\uc815\uc2dd\uc774\ub77c\uc11c \uc5c6\ub2e4.)<\/p>\n<p>        \ub530\ub77c\uc11c \uc6d0\uc758 \ubc29\uc815\uc2dd\uc744 x=1\uc778 \uc9c0\uc810\ubd80\ud130 x=a\uc778 \uc9c0\uc810\uae4c\uc9c0 \uc801\ubd84\uc744 \ud574\uc11c \uc6d0 \ub113\uc774\uc758 1\/5\uac00 \ub418\ub294 \uc9c0\uc810\uc744 \ucc3e\uc544\uc57c \ud55c\ub2e4. \ud30c\uc774\uc36c\uc744 \uc368\ubcf4\uc790.<br \/>\n        <\/p>\n<div class=\"txc-textbox\" style=\"border-style: solid; border-width: 1px; border-color: rgb(231, 253, 181); background-color: rgb(231, 253, 181); padding: 10px;\">\n         import numpy<br \/>\n         <br \/>\n         Integrated = 0.0<br \/>\n         <br \/>\n         dx = 1.0E-8<br \/>\n         <br \/>\n         x = 1.0<br \/>\n         <br \/>\n         def circle(x):<br \/>\n         <br \/>\n         return numpy.sqrt(1.0-x*x)<br \/>\n         <br \/>\n         while Integrated<=numpy.pi\/5.0:\n         <br \/>\n         x-=dx<br \/>\n         <br \/>\n         Integrated += 2.0*circle(x)*dx<br \/>\n         <br \/>\n         print(x)<br \/>\n         \n<\/div>\n<p>\n        \uc800\uae30 \uc911\uac04\uc5d0 numpy.pi\ub97c 2.0*numpy.pi\ub85c \uace0\uce58\uba74 \uc6d0 \ub113\uc774\uc758 2\/5\uac00 \ub418\ub294 \uc9c0\uc810\uc744 \ucc3e\uc544\uc8fc\uac8c \ub41c\ub2e4. \uc544\ub2c8\uba74 \uc911\uac04\uc5d0 2.0\uc744 1.0\uc73c\ub85c \uace0\uccd0\ub3c4 \ub41c\ub2e4. \uc5b4\uca0c\ub4e0. \uc801\ubd84 \ubc29\ubc95\uc774 \uc0ac\ub2e4\ub9ac\uaf34 \ubc29\ubc95\ub3c4 \uc544\ub2cc \uadf8\ub0e5 \uc0ac\uac01\ud615 \ubc29\ubc95\uc774\uae34 \ud558\uc9c0\ub9cc \uc5b4\ucc28\ud53c dx\uad6c\uac04\uc774 \uc791\uc544\uc11c \ubcc4 \ubb38\uc81c\ub294 \uc5c6\ub2e4. x\ub294 \uc801\ubd84\uc744 0\uc5d0\uc11c\ubd80\ud130\uac00 \uc544\ub2c8\ub77c 1\uc5d0\uc11c\ubd80\ud130 \uc2dc\uc791\ud558\ub294\ub370, \ub530\ub77c\uc11c \uc6b0\ub9ac\uac00 \ucc3e\ub294 \ub2f5\uc740 1-x\uac00 \ub41c\ub2e4.<\/p>\n<p>        \uadf8\ub807\uac8c \ud558\uba74 x = 0.508\uc778 \uc9c0\uc810\uc774 \ubc14\ub85c 1\/5\uac00 \ub418\ub294 \uc9c0\uc810\uc774\ub2e4. \ub300\ub7b5 \ubc18\uc9c0\ub984\uc758 \uc808\ubc18\uc815\ub3c4 \ub41c\ub2e4.<br \/>\n        <br \/>\n        \uadf8\ub9ac\uace0 x=0.343\uc778 \uc9c0\uc810\uc774 \ubc14\ub85c 2\/5\uac00 \ub418\ub294 \uc9c0\uc810\uc774\ub2e4.<\/p>\n<p>        \uc989, \uc77c\ub2e8 \uc624\ub978\ucabd \ub05d\uc5d0\uc11c\ubd80\ud130 \ubc18\uc9c0\ub984\uc758 0.5\uc815\ub3c4 \ub418\ub294 \ubd80\ubd84\uc5d0\uc11c \uc798\ub77c\ub0b8\ub2e4. \uadf8 \ub2e4\uc74c \uc67c\ucabd \ub05d\uc5d0\uc11c\ubd80\ud130 \ubc18\uc9c0\ub984\uc758 0.34\ubc30\uc815\ub3c4 \ub418\ub294 \ubd80\ubd84\uc5d0\uc11c \uc798\ub77c\ub0b8\ub2e4. \uadf8\ub9ac\uace0 \ub450\ubc88\uc9f8 \uc798\ub77c\uc11c \uc0dd\uae34 \ub450 \uc870\uac01\uc744 \ud55c\ubc88\uc5d0 \uc808\ubc18\uc73c\ub85c \uc790\ub974\uba74 \ub41c\ub2e4.<\/p>\n<p>        0.000001%\ub77c\ub3c4, \ub610\ub294 \uadf8\ubcf4\ub2e4 \ub354 \uc815\ud655\ud558\uac8c \ub611\uac19\uc544\uc57c \ud55c\ub2e4\uace0 \uc8fc\uc7a5\ud558\ub294 \uc0ac\ub78c\uc774 \uc788\uc744 \uc218 \uc788\ub2e4. \uadf8\ub7f0 \uc0ac\ub78c\uc740 \uc6d0\ud558\ub294 \uc624\ucc28\ub97c \uc54c\ub824\uc8fc\uba74 \uadf8\ubcf4\ub2e4 \ub354 \uc791\uc740 \uc624\ucc28\ub85c \uc790\ub97c \uc218 \uc788\ub294 \uc815\ud655\ud55c \uc218\uce58\ub97c \uc5b8\uc81c\ub098 \uc54c\ub824\uc904 \uc218 \uc788\ub2e4. (\uc65c\ub0d0\ud558\uba74 \ub9ac\ub9cc \uc801\ubd84\uc740 \uc218\ub834\ud558\uae30 \ub54c\ubb38\uc774\ub2e4.) \uc544\ubb34\ub9ac \uc791\uc740 \uc624\ucc28\ub77c\ub3c4 0\ubcf4\ub2e4 \ud070 \uc624\ucc28\uc774\uae30\ub9cc \ud558\uba74 \ub41c\ub2e4.<\/p>\n<div style=\"width:100%;margin-top:30px;clear:both;height:30px\">\n<div style=\"width:31px;float:left;\">\n<a href=\"\/toolbar\/popup\/abuseReport\/?entryId=2897\" onclick=\"window.open(this.href, 'tistoryThisBlogPopup', 'width=550, height=510, toolbar=no, menubar=no, status=no, scrollbars=no'); return false;\"><br \/>\n<img data-recalc-dims=\"1\" decoding=\"async\" alt=\"\uc2e0\uace0\" src=\"https:\/\/i0.wp.com\/t1.daumcdn.net\/tistory_admin\/static\/ico\/ico_spam_report.png\" style=\"border:0\"\/><br \/>\n<\/a>\n<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>http:\/\/jinh.tistory.com\/549 \ud558\ub098\uc758 \ucf00\uc774\ud06c\ub97c \uce7c\uc9c8 3\ubc88\uc73c\ub85c 5\uba85\uc774 \ub098\ub220\uba39\ub294 \ubc29\ubc95\uc744 \ucc3e\uc544\uc57c \ud55c\ub2e4. \uadf8\ub798\uc11c \ub09c \ub2e4\uc74c\uacfc \uac19\uc740 \ud574\ubc95\uc744 \ucc3e\uc544\ubcf4\uc558\ub2e4. \ube68\uac04\uc0c9 \uc120 A, B, C\ub97c \ub530\ub77c\uc11c 3\ubc88 \uce7c\uc9c8\ud558\uba74 \ub41c\ub2e4. \ubb38\uc81c\ub294 a\uc640 b\uc758 \uc704\uce58\uc774\ub2e4. a\ub294 \uc798\ub790\uc744 \ub54c \uc804\uccb4\uc758 1\/5\uac00 \ub418\ub294 \uc9c0\uc810\uc774\uc5b4\uc57c \ud558\uace0 b\ub294 \uc798\ub790\uc744 \ub54c \uc804\uccb4\uc758 2\/5\uac00 \ub418\ub294 \uc9c0\uc810\uc774\uc5b4\uc57c \ud55c\ub2e4. C\ub294 A\ub97c \uc798\ub77c\uc11c \uccd0\ub0b8 \ud6c4 \ub098\uba38\uc9c0 \ubd80\ubd84\uc744 \uc9c0\ub984\uc744 \ub530\ub77c \uc790\ub974\uba74 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_crdt_document":"","_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[2],"tags":[],"class_list":["post-10066","post","type-post","status-publish","format-standard","hentry","category-academic"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p8o6gA-2Cm","jetpack-related-posts":[],"jetpack_likes_enabled":true,"_links":{"self":[{"href":"http:\/\/melotopia.net\/b\/index.php?rest_route=\/wp\/v2\/posts\/10066","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/melotopia.net\/b\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/melotopia.net\/b\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/melotopia.net\/b\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/melotopia.net\/b\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=10066"}],"version-history":[{"count":0,"href":"http:\/\/melotopia.net\/b\/index.php?rest_route=\/wp\/v2\/posts\/10066\/revisions"}],"wp:attachment":[{"href":"http:\/\/melotopia.net\/b\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=10066"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/melotopia.net\/b\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=10066"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/melotopia.net\/b\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=10066"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}