{"id":8837,"date":"2010-02-17T14:26:00","date_gmt":"2010-02-17T14:26:00","guid":{"rendered":"http:\/\/melotopia.net\/b\/?p=8837"},"modified":"2010-02-17T14:26:00","modified_gmt":"2010-02-17T14:26:00","slug":"%ea%b0%84%eb%8b%a8%ed%95%9c-%ec%88%98%ed%95%99-%eb%ac%b8%ec%a0%9c","status":"publish","type":"post","link":"http:\/\/melotopia.net\/b\/?p=8837","title":{"rendered":"\uac04\ub2e8\ud55c \uc218\ud559 \ubb38\uc81c"},"content":{"rendered":"<div class=\"desc\">\n        \ub300\ud559\uad50 3\ud559\ub144\ub54c \uc218\ub9ac\ubb3c\ub9ac\ud559 \uad50\uc218\ub2d8\uc774 \uc218\ud559\uc5ec\ud589 \uac00\uc11c \ub0b4\uc900 \uc218\ud559 \ubb38\uc81c\ub2e4. (\uc218\ud559\uc774 \uadf8 \uc218\ud559\uc774 \uc544\ub2c8\ub77c\ub294 \uac70&#8230;)<\/p>\n<div class=\"txc-textbox\" style=\"border: 1px solid rgb(254, 254, 184); padding: 10px; background-color: rgb(254, 254, 184);\">\n<span style=\"text-decoration: line-through;\"><br \/>\n          \uc2e4\uc218\uc5d0\uc11c \uc2e4\uc218\ub85c \uac00\ub294 f(x)\ub97c \ub2e4\uc74c\uacfc \uac19\uc774 \uc815\uc758\ud558\uc790.<br \/>\n         <\/span><br \/>\n<br style=\"text-decoration: line-through;\"><br \/>\n<span style=\"text-decoration: line-through;\"><br \/>\n           f(x) = x (x\ub294 \uc784\uc758\uc758 \uc2e4\uc218)<br \/>\n          <\/span><br \/>\n<br style=\"text-decoration: line-through;\"><br \/>\n<br style=\"text-decoration: line-through;\"><br \/>\n<span style=\"text-decoration: line-through;\"><br \/>\n             f(x)\ub97c 0.5\ubc88 \ubbf8\ubd84\ud55c \ud568\uc218\ub97c \uad6c\ud558\uc2dc\uc624.<br \/>\n            <\/span><br \/>\n<\/br><br \/>\n<\/br><br \/>\n<\/br>\n<\/div>\n<p>\n        \ubb38\uc81c\uac00 \ub2f5\uc774 \uc5c6\uc744(?) \uac83 \uac19\uc544\uc11c \ud568\uc218\ub97c \uace0\uccd0\ub454\ub2e4. \ubb3c\ub860 \uc704\uc758 f(x)=x\uc5d0 \ub300\ud55c \ub2f5\ub3c4 \ud55c\ubc88 \ub530\uc838\ubd10\uc57c\uaca0\ub2e4.<\/p>\n<div class=\"txc-textbox\" style=\"border: 1px solid rgb(254, 254, 184); padding: 10px; background-color: rgb(254, 254, 184);\">\n         \uc2e4\uc218\uc5d0\uc11c \uc2e4\uc218\ub85c \uac00\ub294 f(x)\ub97c \ub2e4\uc74c\uacfc \uac19\uc774 \uc815\uc758\ud558\uc790.<br \/>\n         <br \/>\n         f(x) = exp(-x*x)<br \/>\n         <br \/>\n         f(x)\ub97c 0.5\ubc88 \ubbf8\ubd84\ud55c \ud568\uc218\ub97c \uad6c\ud558\uc2dc\uc624.\n        <\/div>\n<p>        \ud78c\ud2b8\uac00 \uc228\uc5b4\uc788\uc74c. -_-;<br \/>\n        <\/p>\n<div class=\"txc-textbox\" style=\"border: 1px solid rgb(231, 253, 181); padding: 10px; background-color: rgb(231, 253, 181);\">\n         \ub098\uc911\uc5d0 \ub2f5\uc744 \uc77d\uc5b4\ubcf4\uba74 \ud478\ud558\ud558 \uc6c3\uc744 \uc218\ub3c4 \uc788\uc9c0\ub9cc<br \/>\n         <br \/>\n         \uc6d0\ub798 \ub2e4\ub4e4 \uadf8\ub807\ub4ef\uc774 \uc218\ub9ac\ubb3c\ub9ac\ud559\uc774\ub77c\ub294\uac8c<br \/>\n         <br \/>\n         \ub9ce\uc774 \ubcf5\uc7a1\ud55c\ub4ef\ud55c  \uacc4\uc0b0\uc5d0 \ubab0\ub450\ud558\uac8c \ud558\uba74\uc11c\ub3c4<br \/>\n         <br \/>\n         \uc0ac\uc2e4\uc740 \uc0b0\uc218 \uacc4\uc0b0\uc5d0 \uae09\uae09\ud558\uc5ec<br \/>\n         <br \/>\n         \uc2e4\uc81c\ub85c \uc911\uc694\ud55c \ubd80\ubd84\uc778 \uc218\ud559\uc740 \ube7c\uba39\uac8c \ub41c\ub2e4.<br \/>\n         \n<\/div>\n<p>\n        \uc0ac\uc2e4 \ub098\ub3c4 \uc870\uae08 \ub450\ub824\uc6b4\uac8c \ub09a\uc2dc\ud574\ub193\uace0\uc11c \ub0b4\uac00 \uc544\ub294 \ubc29\ubc95\uc73c\ub85c \uacc4\uc0b0\uc744 \ud574\ubd24\ub294\ub370 \uac12\uc774 \ubc1c\uc0b0\ud558\uac70\ub098 \uc81c\ub300\ub85c \uc548\ub418\uba74 \uc5b4\uca4c\uc9c0 \ud558\ub294 \uac70\uc9c0\ub9cc. \ub17c\ubb38\ub3c4 \uc544\ub2cc\ub370 \ubb50 \uc5b4\ub5a4\uac00&#8230;\u314b<\/p>\n<p>        &#8212;-\ud574\uc124&#8212;-<\/p>\n<p>        \uc5b4\uca0c\ub4e0 \ub2f5\uc740 \ud478\ub9ac\uc5d0 \ubcc0\ud658\uacfc \uc5f0\uad00\uc774 \uc788\ub2e4.<\/p>\n<p>        $\\hat{f}(k)=\\int f(x)\\exp(ikx)dx$<br \/>\n        <br \/>\n        \ub77c\uace0 \ud558\uc790.<br \/>\n        <br \/>\n        \uadf8\ub7fc \uc774\uac83\uc758 \uc5ed\ubcc0\ud658\uc740<br \/>\n        <br \/>\n        $f(x)=\\int \\hat{f}(k)\\exp(-ikx)dk$<br \/>\n        <br \/>\n        \uc774\ub2e4. f(x)\ub97c x\uc5d0 \ub300\ud574\uc11c \ubbf8\ubd84\ud574 \ubcf4\uc790.<br \/>\n        <br \/>\n        $f'(x)=\\int \\hat{f}(k) (-ik) \\exp(-ikx)dk$<br \/>\n        <br \/>\n        \uc801\ubd84 \uc548\uc5d0 \uc788\ub294 x\ub294 \uc801\ubd84\ubcc0\uc218\uc778 k\uc640\ub294 \ubb34\uad00\ud55c \ubcc0\uc218\uc774\uae30 \ub54c\ubb38\uc5d0 \uadf8\ub0e5 \ubbf8\ubd84\ud574\ub3c4 \ub41c\ub2e4. \uadf8\ub807\uac8c \uadf8\ub0e5 \ubbf8\ubd84\ud588\ub354\ub2c8 -ik\uac00 \ub2ec\ub77c\ubd99\uc5c8\ub2e4.<\/p>\n<p>        \ub450\ubc88 \ubbf8\ubd84\ud574 \ubcf4\uc790.<br \/>\n        <br \/>\n        $f&#8221;(x)=\\int \\hat{f}(k) (-ik) (-ik) \\exp(-ikx)dk$<br \/>\n        <br \/>\n        \ub2f9\uc5f0\ud788 -ik\uac00 \ub450\ubc88 \ub098\uc628\ub2e4.<br \/>\n        <br \/>\n        n\ubc88 \ubbf8\ubd84\ud574 \ubcf4\uba74 \uc5b4\ub5bb\uac8c \ub420\uc9c0 \ubed4\ud558\ub2e4.<br \/>\n        <br \/>\n        $f^{(n)}(x)=\\int \\hat{f}(k) (-ik)^n \\exp(-ikx)dk$<br \/>\n        <br \/>\n        \uc774\ub798\ub3c4 \ub429\ub2c8\uae4c? \ub77c\uace0 \ubb3c\uc5b4\ubcfc \uc218\ub3c4 \uc788\uc9c0\ub9cc, \uc801\ubd84\uc774\ub098 \uae09\uc218\ub294 \uc218\ub834\ud558\uae30\ub9cc \ud55c\ub2e4\uba74 \ubb50\ub4e0\uc9c0 \ud574\ub3c4 \ub41c\ub2e4. (\ubb3c\ub860 \ub09c \uc544\uc9c1 \uc218\ub834\uc131\uc740 \uc99d\uba85\ud558\uc9c0 \uc54a\uc558\ub2e4. \uc0ac\uc2e4 \uc774\uac8c \uc218\ub834\ud558\ub294\uc9c0 \uc5b4\ub5a4\uc9c0\uc5d0 \ub300\ud574\uc11c\ub294 \ud655\uc2e0\uc774 \uc5c6\ub2e4. \uc99d\uba85\ud574\ubcf8 \uae30\uc5b5\uc774 \uc5c6\ub294 \ub4ef&#8230;)<br \/>\n        <br \/>\n        \ubb3c\ub860 \uc544\uc9c1\uae4c\uc9c0 n\uc740 \uc815\uc218\ub2e4. n\uc5d0 \uc74c\uc218\ub97c \ub123\uc73c\uba74 \uc801\ubd84\ub3c4 \ud560 \uc218 \uc788\ub2e4. (\uc218\ub834\ud55c\ub2e4\uba74&#8230;)<\/p>\n<p>        \uadf8\ub7fc \ud639\uc2dc n\uc5d0 \uc720\ub9ac\uc218\ub97c \ub123\uc5b4\ub3c4 \ub420\uae4c? (\uc544\ub9c8\ub3c4) \ub41c\ub2e4.<\/p>\n<p>        \uadf8\ub7ec\ub2c8\uae4c, \uacb0\uad6d 0.5\ubc88 \ubbf8\ubd84\ud55c \ud568\uc218\ub77c\ub294 \uac83\uc740<br \/>\n        <br \/>\n        $f^{(0.5)}(x)=\\int \\hat{f}(k) \\sqrt{-ik} \\exp(-ikx)dk$<br \/>\n        <br \/>\n        \ub97c \uacc4\uc0b0\ud558\uba74 \ub41c\ub2e4.<\/p>\n<p>        \uadf8\ub098\uc800\ub098 \ub0b4\uac00 \ubcf8\ubb38\uc5d0 \uc81c\uc2dc\ud55c \ud568\uc218\uc758 \ud478\ub9ac\uc5d0 \ubcc0\ud658\uc744 \uc5b4\ub5bb\uac8c \ud574\uc57c \ud558\ub294\uc9c0\ub294 \uc815\ud655\ud788 \ubaa8\ub974\uaca0\ub2e4. \uc6d0\ub798 \uac00\uc6b0\uc2a4 \ud568\uc218\ub294 \ud478\ub9ac\uc5d0 \ubcc0\ud658\uc5d0 \ub300\ud574\uc11c \ubd88\ubcc0\uc778 \ud568\uc218\uc774\uae30 \ub54c\ubb38\uc5d0 \uacc4\uc0b0\uc774 \uc27d\uae34 \ud55c\ub370, \uc9c0\uae08 \uacc4\uc0b0\ud558\uae30\uc5d4 (\ub9c8\uc74c \uc18d\uc758) \uc5ec\ubc31\uc774 \ubd80\uc871\ud558\ub2e4. \uc5b8\uc820\uac00 \uc774 \ubb38\uc81c\uc5d0 \ub300\ud574\uc11c \ub2f5\uc744 \uc4f8 \ub0a0\uc774 \uc624\uaca0\uac70\ub2c8 \uc2f6\ub2e4.<br \/>\n        <\/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=1657\" 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>\ub300\ud559\uad50 3\ud559\ub144\ub54c \uc218\ub9ac\ubb3c\ub9ac\ud559 \uad50\uc218\ub2d8\uc774 \uc218\ud559\uc5ec\ud589 \uac00\uc11c \ub0b4\uc900 \uc218\ud559 \ubb38\uc81c\ub2e4. (\uc218\ud559\uc774 \uadf8 \uc218\ud559\uc774 \uc544\ub2c8\ub77c\ub294 \uac70&#8230;) \uc2e4\uc218\uc5d0\uc11c \uc2e4\uc218\ub85c \uac00\ub294 f(x)\ub97c \ub2e4\uc74c\uacfc \uac19\uc774 \uc815\uc758\ud558\uc790. f(x) = x (x\ub294 \uc784\uc758\uc758 \uc2e4\uc218) f(x)\ub97c 0.5\ubc88 \ubbf8\ubd84\ud55c \ud568\uc218\ub97c \uad6c\ud558\uc2dc\uc624. \ubb38\uc81c\uac00 \ub2f5\uc774 \uc5c6\uc744(?) \uac83 \uac19\uc544\uc11c \ud568\uc218\ub97c \uace0\uccd0\ub454\ub2e4. \ubb3c\ub860 \uc704\uc758 f(x)=x\uc5d0 \ub300\ud55c \ub2f5\ub3c4 \ud55c\ubc88 \ub530\uc838\ubd10\uc57c\uaca0\ub2e4. \uc2e4\uc218\uc5d0\uc11c \uc2e4\uc218\ub85c \uac00\ub294 f(x)\ub97c \ub2e4\uc74c\uacfc \uac19\uc774 \uc815\uc758\ud558\uc790. f(x) = [&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-8837","post","type-post","status-publish","format-standard","hentry","category-academic"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p8o6gA-2ix","jetpack-related-posts":[],"jetpack_likes_enabled":true,"_links":{"self":[{"href":"http:\/\/melotopia.net\/b\/index.php?rest_route=\/wp\/v2\/posts\/8837","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=8837"}],"version-history":[{"count":0,"href":"http:\/\/melotopia.net\/b\/index.php?rest_route=\/wp\/v2\/posts\/8837\/revisions"}],"wp:attachment":[{"href":"http:\/\/melotopia.net\/b\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=8837"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/melotopia.net\/b\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=8837"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/melotopia.net\/b\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=8837"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}