{"id":8927,"date":"2010-02-12T18:38:00","date_gmt":"2010-02-12T18:38:00","guid":{"rendered":"http:\/\/melotopia.net\/b\/?p=8927"},"modified":"2010-02-12T18:38:00","modified_gmt":"2010-02-12T18:38:00","slug":"%eb%8b%a4%ec%b0%a8%ec%9b%90-%ed%91%b8%eb%a6%ac%ec%97%90-%eb%b3%80%ed%99%98","status":"publish","type":"post","link":"http:\/\/melotopia.net\/b\/?p=8927","title":{"rendered":"\ub2e4\ucc28\uc6d0 \ud478\ub9ac\uc5d0 \ubcc0\ud658"},"content":{"rendered":"<div class=\"desc\">\n        \uc694\uc0c8 \ud558\ub3c4 \uc815\uc218\ub860 \uad00\ub828 \uc598\uae30\uac00 \uc774 \ube14\ub85c\uadf8\uc5d0\uc11c \uc624\uac00\uace0 \uc788\uc5b4\uc11c \ub0b4\uac00 \ub9c8\uce58 \uc815\uc218\ub860\uc774\ub098 \ub300\uc218\ud559\uc5d0 \uc7ac\ub2a5\uc774 \uc788\ub294 \uc0ac\ub78c\uc778 \uac83\uc73c\ub85c \ucc29\uac01\ud560 \uc218\ub3c4 \uc788\uaca0\uc9c0\ub9cc, \ub09c \uc0ac\uc2e4 \uc815\uc218\ub860 D+\uc5d0 \ub300\uc218\ud559 D+\ubc1b\uace0 \uc878\uc5c5\ud55c \uc0ac\ub78c\uc774\ub2e4.<br \/>\n        <sup class=\"footnote\"><br \/>\n<a href=\"#footnote_1753_1\" id=\"footnote_link_1753_1\" onmouseout=\"tistoryFootnote.hide(1753,1)\" onmouseover=\"tistoryFootnote.show(this,1753,1)\" style=\"color:#f9650d;font-family:Verdana,Sans-serif\"><br \/>\n<span style=\"display:none\"><br \/>\n           [\uac01\uc8fc:<br \/>\n          <\/span><br \/>\n          1<br \/>\n          <span style=\"display:none\"><br \/>\n           ]<br \/>\n          <\/span><br \/>\n<\/a><br \/>\n<\/sup><br \/>\n        \ub0b4\uac00 \uc88b\uc544\ud558\ub294\uac74 \uc544\uc8fc \uc791\uc740 \uac83\uacfc \uc544\uc8fc \ud070 \uac83\uc744 \ub2e4\ub8e8\ub294 \ud574\uc11d\ud559\uc774\ub2e4. \uc798\ud55c\uac74 \uc544\ub2c8\uc9c0\ub9cc \uc815\uc218\ub860\uc774\ub098 \ub300\uc218\ud559\ubcf4\ub2e8 \ub192\uc740 \uc131\uc801\uc73c\ub85c \uc878\uc5c5\uc744 \ud588\ub2e4. \ud478\ub9ac\uc5d0 \ubcc0\ud658\uc740 \uc801\ubd84\ubcc0\ud658\uc758 \ud55c \uc885\ub958\ub85c, \uc774\uacf5\uacc4 \ubaa8\ub4e0 \ubd84\uc57c\uc5d0\uc11c \uad11\ubc94\uc704\ud558\uac8c \uc4f0\uc774\ub294 \uc911\uc694\ud55c \ub3c4\uad6c\uc774\ub2e4. \uadf8\ub9ac\uace0 \ub2e4\ucc28\uc6d0 \ud478\ub9ac\uc5d0 \ubcc0\ud658 \uc815\ub3c4\ub294 \uac00\ubccd\uac8c \ud574\uc918\uc57c \uacf5\ubd80\uc880 \ud574\uc92c\uad6c\ub098 \ud558\ub294 \ub290\ub08c\uc774 \ub4e4\uac8c \ub420 \uac83\uc774\ub2e4.<br \/>\n        <sup class=\"footnote\"><br \/>\n<a href=\"#footnote_1753_2\" id=\"footnote_link_1753_2\" onmouseout=\"tistoryFootnote.hide(1753,2)\" onmouseover=\"tistoryFootnote.show(this,1753,2)\" style=\"color:#f9650d;font-family:Verdana,Sans-serif\"><br \/>\n<span style=\"display:none\"><br \/>\n           [\uac01\uc8fc:<br \/>\n          <\/span><br \/>\n          2<br \/>\n          <span style=\"display:none\"><br \/>\n           ]<br \/>\n          <\/span><br \/>\n<\/a><br \/>\n<\/sup><\/p>\n<p>        \ud478\ub9ac\uc5d0 \ubcc0\ud658\uc774 \uc5b4\ub5a4 \ud558\ub098\uc758 \ud568\uc218\uac00 \uc8fc\uc5b4\uc84c\uc744 \ub54c, \uadf8 \ud568\uc218\uac00 \uc5b4\ub5a4 \uc8fc\uae30\uc131\uc744 \uac16\uace0 \uc788\ub294\uc9c0 \ubd84\uc11d\ud558\ub294 \ubc29\ubc95\uc758 \ud558\ub098\ub77c\ub294 \uac83\uc740 \uacf5\ubd80\ud574 \ubcf4\uc558\uc5c8\ub2e4. \uadf8\ub7fc, \uadf8 \ud568\uc218\uac00 \ub2e4\ucc28\uc6d0 \ud568\uc218\uc778 \uacbd\uc6b0\uc5d0\ub294 \uc5b4\ub5bb\uac8c \ub420 \uac83\uc778\uac00? \uc5ec\uae30\uc11c \ub9d0\ud558\ub294 \ub2e4\ucc28\uc6d0 \ud568\uc218\ub780, \uc5ec\ub7ec\uac1c\uc758 \uc218\ub97c \uc8fc\uba74 \ud558\ub098\uc758 \uc218\ub97c \uc54c\ub824\uc8fc\ub294 \ud568\uc218\ub97c \ub9d0\ud55c\ub2e4. \uc5ec\ub7ec\uac1c\uc758 \uc218\ub97c \uc8fc\uc5c8\uc744 \ub54c \uc5ec\ub7ec\uac1c\uc758 \uc218\ub97c \uc54c\ub824\uc8fc\ub294 \ud568\uc218\ub294 \ubca1\ud130\uac12 \ud568\uc218\uc774\uace0, \uc774 \uacbd\uc6b0\uc5d0\ub294 \uadf8 \ubca1\ud130\uc758 \uac01\uac01\uc758 \uc131\ubd84\uc5d0 \ub300\ud574\uc11c \ud478\ub9ac\uc5d0 \ubcc0\ud658\uc744 \uc2dc\ud589\ud558\ub294 \uc9d3\uc744 \ud574\uc57c \ud55c\ub2e4. \ubb3c\ub860 \uadf8\uac83\ub3c4 \uc758\ubbf8\ub294 \uc788\uaca0\uc9c0\ub9cc, \uadf8\ub7f0 \uacbd\uc6b0\ub77c\uace0 \ud574\ub3c4 \uc5b4\ucc28\ud53c \uac01\uac01\uc758 \uc131\ubd84\uc740 \ud558\ub098\uc758 \uc218\uc5d0 \ud574\ub2f9\ud558\ubbc0\ub85c \uc774 \uae00\uc5d0\uc11c\ub294 \uc5ec\ub7ec\uac1c\uc758 \uc218\ub97c \ud558\ub098\uc758 \uc218\ub85c \ubc14\uafd4\uc8fc\ub294 \uadf8\ub7f0 \uc885\ub958\uc758 \ud568\uc218\ub9cc\uc744 \ub2e4\ub904\ubcf4\ub3c4\ub85d \ud558\uaca0\ub2e4.<\/p>\n<p>        \uc5ec\ub7ec\uac1c\uc758 \uc218\uac00 \ub098\ud0c0\ub0b4\ub294 \uac83\uc740, \ub300\ubd80\ubd84\uc758 \uacbd\uc6b0 \uc5b4\ub5a4 \uacf5\uac04\uc5d0\uc11c\uc11c \uc704\uce58\ub97c \uc54c\ub824\uc8fc\ub294 \ubca1\ud130\uc774\ub2e4. \ubca1\ud130\uc758 \uc815\uc758\ub294 \uc5ec\ub7ec\uac00\uc9c0\ub85c \ud574\ubcfc \uc218 \uc788\uaca0\uc9c0\ub9cc, \uc5b4\ucc28\ud53c \uadf8\ub188\uc774 \ub2e4 \uadf8\ub188\uc774\uace0 \uc11c\ub85c \ubc14\uafd4\uc11c \uc0dd\uac01\ud574\ubcfc \uc218\ub3c4 \uc788\uc73c\ubbc0\ub85c \ub0b4 \ube14\ub85c\uadf8\uc5d0\uc11c \uc5ec\ub7ec\ubc88 \uc815\uc758\ud588\ub358 \ub300\ub85c \uadf8\ub0e5 \uc2dc\uc791\uc810\uacfc \ub05d\uc810\uc774 \uc815\ud574\uc9c4 \ud654\uc0b4\ud45c\ub77c\uace0 \uc0dd\uac01\ud558\ub3c4\ub85d \ud558\uc790. \uc0ac\uc2e4\uc740 \ubc29\ud5a5\uacfc \ud06c\uae30\ub9cc \uc54c\uc544\ub3c4 \ucda9\ubd84\ud558\ub2e4.<br \/>\n        <sup class=\"footnote\"><br \/>\n<a href=\"#footnote_1753_3\" id=\"footnote_link_1753_3\" onmouseout=\"tistoryFootnote.hide(1753,3)\" onmouseover=\"tistoryFootnote.show(this,1753,3)\" style=\"color:#f9650d;font-family:Verdana,Sans-serif\"><br \/>\n<span style=\"display:none\"><br \/>\n           [\uac01\uc8fc:<br \/>\n          <\/span><br \/>\n          3<br \/>\n          <span style=\"display:none\"><br \/>\n           ]<br \/>\n          <\/span><br \/>\n<\/a><br \/>\n<\/sup><br \/>\n        \uc774\uc81c \uc774\uac78 \ud478\ub9ac\uc5d0 \ubcc0\ud658\uc744 \ud574 \ubcf4\uc790. \ub9cc\uc57d, \ud568\uc218\uac00 F(x,y,z,&#8230;)\uc774\ub807\uac8c \uc8fc\uc5b4\uc838 \uc788\ub294\ub370 x\ub9cc \ube7c\uace0 y,z&#8230; \uc774\ub7f0 \uac12\ub4e4\uc740 \ub2e4 \uace0\uc815\uc2dc\ucf1c\ub193\ub294\ub2e4\uace0 \ud558\uc790. \uadf8\ub7fc \uc774 \ud568\uc218\ub294 x\ub77c\ub294 \ubcc0\uc218 \ud558\ub098\uc5d0\ub9cc \uc758\uc874\ud558\ub294 \ud568\uc218\uc774\uace0, \uc774\ub7f0 \ud568\uc218\uc758 \ud478\ub9ac\uc5d0 \ubcc0\ud658\uc740 \uc55e\uc5d0\uc11c \uc798 \ud574\ubd24\uc5c8\ub2e4. \ub9c8\ucc2c\uac00\uc9c0\ub85c, y \ud558\ub098\ub9cc \ubcc0\ud558\uac8c \ud574\ub3c4 \uc27d\uace0, z\ud558\ub098\ub9cc \ubcc0\ud558\uac8c \ud574\ub3c4 \uc27d\ub2e4. \uc544\ub2c8, \uadf8\ub7fc \ubb50\uac00 \uc5b4\ub824\uc6b4\uac74\uac00? \uc27d\ub2e4. \uc77c\ub2e8 x\uc5d0 \ub300\ud574\uc11c \ud478\ub9ac\uc5d0 \ubcc0\ud658\uc744 \ud55c\ub2e4. \uc774\uac83\uc740 x\uc5d0 \ub300\ud55c \uc8fc\ud30c\uc218 \uc131\ubd84\ub9cc \uc54c\uac8c \ub418\uace0, \ub098\uba38\uc9c0 y, z&#8230;\ub4f1\uc5d0 \ub300\ud55c \uc8fc\ud30c\uc218 \uc131\ubd84\uc740 \uc54c\ub824\uc8fc\uc9c0 \uc54a\ub294\ub2e4. \uc5ec\uc804\ud788 y, z&#8230; \uc5d0 \ub300\ud55c \uac83\uc740 \uc704\uce58\uc5d0 \ub300\ud55c \ud568\uc218\uc774\ub2e4. \uc774\uac78 \uadf8\ub300\ub85c y\uc5d0 \ub300\ud574 \ud478\ub9ac\uc5d0 \ubcc0\ud658\uc744 \ud55c\ub2e4. \uadf8\ub7fc x\uc640 y\uc5d0 \ub300\ud55c \uc8fc\ud30c\uc218 \uc131\ubd84\uc744 \uc54c\uac8c \ub418\uace0, &#8230; \uc774\ub7f0 \uc2dd\uc73c\ub85c \uacc4\uc18d\ud574\uc11c \uac01 \ubcc0\uc218\uc5d0 \ub300\ud574\uc11c \uc5f0\uc18d\uc801\uc73c\ub85c \ud478\ub9ac\uc5d0 \ubcc0\ud658\uc744 \ud574 \ub098\uac00\uba74 \ub41c\ub2e4.<\/p>\n<p>        \uc6d0\ub798\ub294 \uc218\uc2dd\uc744 \uc4f0\uc9c0 \uc54a\uc73c\ub824\uace0 \ud588\ub294\ub370, \uc5f0\uc18d\uc801\uc73c\ub85c \ud478\ub9ac\uc5d0 \ubcc0\ud658\uc744 \ud558\ub294 \uac83\uc774 \uc5b4\ub5a4 \ub9c8\uc655\uc744 \uc18c\ud658\ud558\ub294\uc9c0 \uc54c\uace0 \uc2f6\uc73c\uba74 \uc218\uc2dd\uc744 \uc880 \uc368\uc57c \uaca0\ub2e4. \uc218\uc2dd\uc5d0 \uc790\uc2e0\uc774 \uc5c6\ub294 \uc0ac\ub78c\uc740 \uc544\ub798\uc758 \uae00\uc790\ub4e4\uc774 \uc218\uc2dd\uc774 \uc544\ub2c8\ub77c \ub9c8\ubc95\uc5d0 \uc4f0\ub294 \ub8ec \ubb38\uc790\ub77c\uace0 \uc0dd\uac01\ud558\uace0 \uadf8\ub0e5 \uadf8\ub7ec\ub824\ub2c8 \ud558\uc790. \uac04\ub2e8\ud558\uac8c 2\ucc28\uc6d0\uc5d0 \ub300\ud574\uc11c \uc0dd\uac01\ud574 \ubcf4\uc790. \uc77c\ub2e8 2\ucc28\uc6d0\uc744 \uc774\ud574\ud558\uace0 \ub098\uba74 3\ucc28\uc6d0 \uc774\uc0c1\uc740 \uc800\uc808\ub85c \uc774\ud574\uac00 \ub420 \uac83\uc774\ub2e4.<\/p>\n<p>        $\\hat{f}(k,y)=\\int f(x, y)exp(ikx) dx$<br \/>\n        <br \/>\n        \uc77c\ub2e8 x\uc5d0 \ub300\ud574\uc11c\ub9cc \ud478\ub9ac\uc5d0 \ubcc0\ud658\uc744 \ud558\uba74 \uc774\ub807\uac8c \ub41c\ub2e4. k\uc640 y\uc5d0 \ub300\ud55c \ud568\uc218\uac00 \ub418\uc5c8\ub2e4. \ud568\uc218\uc758 \ud06c\uae30\ub97c \uc720\uc9c0\ud558\uae30 \uc704\ud574\uc11c \uc55e\uc5d0 \ubd99\uac8c \ub418\ub294 \uc0c1\uc218\ub77c\ub4e0\uac00 \uc801\ubd84 \uad6c\uac04 \uac19\uc740\uac74 \ub2e4 \ube7c\ubc84\ub838\ub2e4. \uadf8\ub7f0\uac74 \uc5ec\uae30\uc11c \uc911\uc694\ud558\uc9c0 \uc54a\ub2e4. \uc544\ubb34\ud2bc, \uc774\uc81c $\\hat{f}(k,y)$\ub97c \ub2e4\uc2dc y\uc5d0 \ub300\ud574\uc11c \ud478\ub9ac\uc5d0 \ubcc0\ud658\uc744 \ud574 \ubcf4\uc790.<br \/>\n        <br \/>\n        $\\hat{f}(k,l)=\\int \\hat{f}(k,y)exp(ily) dy $<br \/>\n        <br \/>\n        \uc774\uc81c k\uc640 l\uc5d0 \ub300\ud55c \ud568\uc218\uac00 \ub418\uc5c8\ub2e4. \uadfc\ub370, \uc801\ubd84 \uc548\uc5d0 \uc788\ub294 \ud568\uc218\ub294 \uc0ac\uc2e4 y\uc5d0 \ub300\ud55c \uc801\ubd84\uc774\ub2c8\uae4c x\ub791\uc740 \uc544\ubb34 \uad00\ub828\uc774 \uc5c6\uace0, \ub530\ub77c\uc11c \ud478\ub9ac\uc5d0 \ubcc0\ud658\uc744 \ud558\uae30 \uc804\uc5d0 2\uc911 \uc801\ubd84\uc73c\ub85c \ubc14\uafd4\uc918\ub3c4 \ub420 \uac83\uc774\ub2e4. \ubc14\uafb8\uace0 \uc2f6\uc9c0 \uc54a\uc740\uac00?<br \/>\n        <br \/>\n        $\\hat{f}(k,l)=\\int (\\int f(x, y)exp(ikx) dx)exp(ily) dy $<\/p>\n<p>        \uc6b0\ub9ac\ub294 \uac04\ub2e8\ud788 Copy and Paste\ub97c \uc774\uc6a9\ud574 \ubcfc \uc218 \uc788\ub2e4. \uadf8\ub9ac\uace0 x\ub791 y\ub294 \uc544\ubb34 \uad00\ub828 \uc5c6\ub294 \uc560\ub4e4\uc774\ub2c8\uae4c, \uc801\ubd84 \uc21c\uc11c\ub97c \ubc14\uafd4\ub3c4 \ub41c\ub2e4.<br \/>\n        <sup class=\"footnote\"><br \/>\n<a href=\"#footnote_1753_4\" id=\"footnote_link_1753_4\" onmouseout=\"tistoryFootnote.hide(1753,4)\" onmouseover=\"tistoryFootnote.show(this,1753,4)\" style=\"color:#f9650d;font-family:Verdana,Sans-serif\"><br \/>\n<span style=\"display:none\"><br \/>\n           [\uac01\uc8fc:<br \/>\n          <\/span><br \/>\n          4<br \/>\n          <span style=\"display:none\"><br \/>\n           ]<br \/>\n          <\/span><br \/>\n<\/a><br \/>\n<\/sup><br \/>\n        \ub530\ub77c\uc11c,<br \/>\n        <br \/>\n        $\\hat{f}(k,l)=\\int f(x,y)exp(ikx)exp(ily)dxdy$<\/p>\n<p>        \uadf8\ub7f0\ub370, \uc6b0\ub9ac\ub294 \uc9c0\uc218\ud568\uc218\uc5d0 \ub300\ud574\uc11c \ub108\ubb34 \ub9ce\uc740\uac78 \uc54c\uace0 \uc788\ub2e4.<br \/>\n        <br \/>\n        exp(ikx)exp(ily)=exp(i[kx+ly])<\/p>\n<p>        \uc54c\uc544\uc120 \uc548\ub420 \uac83\uae4c\uc9c4 \uc544\ub2c8\uc9c0\ub9cc, \uac04\ub2e8\ud55c \uc9c0\uc218\ubc95\uce59\uc744 \uc801\uc6a9\ud558\uace0 \ub2e4\uc2dc \ub367\uc148\uacfc \uacf1\uc148\uc758 \ubd84\ubc30\ubc95\uce59\uc744 \ud65c\uc6a9\ud574\uc11c \uc9c0\uc218 \uc548\ucabd\uc744 \ubb36\uc5b4\uc8fc\uc5c8\ub2e4. \uadf8\ub7f0\ub370, \uc9c0\uc218 \uc548\ucabd\uc5d0\uc11c \ud5c8\uc218\ub2e8\uc704\uc778 i\ub97c \ube7c\uace0 \ub2e4\uc2dc \uc798 \uc0b4\ud3b4\ubcf4\uba74 [kx+ly]\ub77c\ub294 \ubd80\ubd84\uc774 \ubcf4\uc778\ub2e4. \uadfc\ub370, \uc774\uac8c \uc6d0\ub798\ub294 (k,l)\uc774\ub77c\ub294 \ubca1\ud130\uc640 (x,y)\ub77c\ub294 \ubca1\ud130\ub97c \ub0b4\uc801\ud55c \uac83\uc774\ub77c\ub294 \uc0ac\uc2e4\uc744 \uae68\ub2eb\uac8c \ub41c\ub2e4. exp\ud568\uc218\uac00 \ud478\ub9ac\uc5d0 \ubcc0\ud658\ud560 \ub54c \ud574\ub2f9 \uc131\ubd84\uc5d0 \ub300\ud55c basis\uc5ed\ud560\uc744 \ud55c\ub2e4\ub294 \uac83\uc744 \uc0dd\uac01\ud574 \ubcf4\uc790. \uc6d0\ub798 1\ucc28\uc6d0 \ud478\ub9ac\uc5d0 \ubcc0\ud658\uc5d0\uc11c exp(ikx)\ub294 k\uc640 x\ub85c \uc774\ub8e8\uc5b4\uc9c4 \uc120\ud615 \uc5f0\uc0b0\uc790\uc774\ub2e4. \uc120\ud615 \uc5f0\uc0b0\uc790\uc758 \ub2e4\ub978 \uc774\ub984\uc740 \ud589\ub82c\uc774\ub2e4.<br \/>\n        <sup class=\"footnote\"><br \/>\n<a href=\"#footnote_1753_5\" id=\"footnote_link_1753_5\" onmouseout=\"tistoryFootnote.hide(1753,5)\" onmouseover=\"tistoryFootnote.show(this,1753,5)\" style=\"color:#f9650d;font-family:Verdana,Sans-serif\"><br \/>\n<span style=\"display:none\"><br \/>\n           [\uac01\uc8fc:<br \/>\n          <\/span><br \/>\n          5<br \/>\n          <span style=\"display:none\"><br \/>\n           ]<br \/>\n          <\/span><br \/>\n<\/a><br \/>\n<\/sup><\/p>\n<p>        \uc7a0\uae50. \uc5ec\uae30\uc11c \uc7a0\uc2dc \uc815\uc2e0\uc904 \ub193\uace0 \uc788\ub294 \ubd84\ub4e4\uc774 \uc788\uc744 \uac83\uc774\ub2e4. \uc774 \ubd80\ubd84\uc5d0 \ub300\ud574\uc11c\ub294 \ub2e4\uc2dc \ub2e4\ub978 \uae00\uc5d0\uc11c \uc124\uba85\uc744 \ud574\uc57c \ud55c\ub2e4. exp\ud568\uc218\uac00 \ud478\ub9ac\uc5d0 \ubcc0\ud658\ud560 \ub54c \ud574\ub2f9 \uc131\ubd84\uc5d0 \ub300\ud55c basis \uc5ed\ud560\uc744 \ud55c\ub2e4\ub294 \uc598\uae30\ub294 \uc544\uc9c1 \ud55c\uc801\uc774 \uc5c6\ub2e4. \uadf8\ub9ac\uace0 \uadf8\uac78 \uc774\ud574\ud558\ub294 \uac83\uc740 \ud478\ub9ac\uc5d0 \uc774\ub860 \uc804\uccb4\ub97c \uc774\ud574\ud558\ub294 \uac83 \ub9cc\ud07c\uc774\ub098 \uc911\uc694\ud55c \uc77c\uc774\ub2e4. \uadf8\ub7ec\ub2c8\uae4c \uc77c\ub2e8\uc740 \uadf8\ub0e5 \uadf8\ub7f0\uac00\ubcf4\ub2e4 \ud558\uace0 \ub118\uc5b4\uac00\uc8fc\uc790. \uc5b8\uc820\uac00 \uadf8\uc5d0 \uad00\ud55c \uae00\uc744 \uc4f8 \uc77c\uc774 \uc788\uc744 \uac83 \uac19\ub2e4.<\/p>\n<p>        \uc544\ubb34\ud2bc, \uc6d0\ub798\uc758 2\ucc28\uc6d0 \ud478\ub9ac\uc5d0 \ubcc0\ud658\uc73c\ub85c \ub418\ub3cc\uc544 \uc640\uc11c \uc218\uc2dd\uc744 \uc798 \uc0b4\ud3b4\ubcf4\uba74, \uc774\uc81c \ub2e4\uc74c\uacfc \uac19\uc774 \uc4f8 \uc218 \uc788\ub2e4\ub294 \uac83\uc744 \uc54c\uac8c \ub41c\ub2e4. \uc544\ub2c8, \ub290\ub07c\uac8c \ub41c\ub2e4.<br \/>\n        <br \/>\n        $\\hat{f}(\\vec{k})=\\int f(\\vec{x})exp(i \\vec{k} \\cdot \\vec{x})dxdy$<\/p>\n<p>        \uc870\uae08\uc740 \uac04\ub2e8\ud574 \uc9c4 \uac83 \uac19\uc740 \ub290\ub08c\uc774 \ub4e4\uc9c0 \uc54a\ub294\uac00? \ud558\uc9c0\ub9cc \ub4a4\uc5d0 \ubd99\uc740 dxdy\uac00 \uc870\uae08 \uac70\uc2ac\ub9b0\ub2e4. \uc774\uac83\ub3c4 \ud569\uccd0\ubc84\ub9ac\uc790.<br \/>\n        <br \/>\n        $\\hat{f}(\\vec{k})=\\int f(\\vec{x})exp(i \\vec{k} \\cdot \\vec{x})dv$<\/p>\n<p>        \uadf8\ub7f0\ub370 \uc774\ub807\uac8c \ud569\uccd0\ub193\uace0 \ub098\ub2c8\uae4c \ub3c4\ub300\uccb4 \uc774\ub188\uc774 \uba87\ucc28\uc6d0\uc5d0\uc11c \uc4f0\ub358 \ud478\ub9ac\uc5d0 \ubcc0\ud658\uc778\uc9c0 \ubaa8\ub974\uac8c \ub418\uc5c8\ub2e4. \uadf8\ub807\ub2e4. \uc218\ud559\uc5d0\uc11c \uc6ec\ub9cc\ud55c \uacbd\uc6b0\uc5d0\ub294 &#8220;\ubaa8\ub978\ub2e4&#8221;\ub294 \uac83\uc740 &#8220;\uc544\ubb34\uac70\ub098&#8221;\ub77c\ub294 \ub73b\uacfc \uac19\ub2e4.<br \/>\n        <sup class=\"footnote\"><br \/>\n<a href=\"#footnote_1753_6\" id=\"footnote_link_1753_6\" onmouseout=\"tistoryFootnote.hide(1753,6)\" onmouseover=\"tistoryFootnote.show(this,1753,6)\" style=\"color:#f9650d;font-family:Verdana,Sans-serif\"><br \/>\n<span style=\"display:none\"><br \/>\n           [\uac01\uc8fc:<br \/>\n          <\/span><br \/>\n          6<br \/>\n          <span style=\"display:none\"><br \/>\n           ]<br \/>\n          <\/span><br \/>\n<\/a><br \/>\n<\/sup><br \/>\n        \uba87\ucc28\uc6d0\uc778\uc9c0\ub294 \uc911\uc694\ud558\uc9c0 \uc54a\uace0, \uc774 \uacf5\uc2dd\uc774 \ucc28\uc6d0\uc758 \uc218\uc5d0 \uc0c1\uad00 \uc5c6\uc774 \uc131\ub9bd\ud558\uac8c \ub41c\ub2e4\ub294 \ub73b\uc774\ub2e4. \uc989, 2\ucc28\uc6d0 \ud478\ub9ac\uc5d0 \ubcc0\ud658\uc744 \uacf5\ubd80\ud55c \uac83 \uac19\uc740\ub370 \ubc8c\uc368 \ubb34\ud55c \ucc28\uc6d0\uc5d0 \ub300\ud574 \uacf5\ubd80\ud574 \ubc84\ub838\ub2e4.<br \/>\n        <sup class=\"footnote\"><br \/>\n<a href=\"#footnote_1753_7\" id=\"footnote_link_1753_7\" onmouseout=\"tistoryFootnote.hide(1753,7)\" onmouseover=\"tistoryFootnote.show(this,1753,7)\" style=\"color:#f9650d;font-family:Verdana,Sans-serif\"><br \/>\n<span style=\"display:none\"><br \/>\n           [\uac01\uc8fc:<br \/>\n          <\/span><br \/>\n          7<br \/>\n          <span style=\"display:none\"><br \/>\n           ]<br \/>\n          <\/span><br \/>\n<\/a><br \/>\n<\/sup><br \/>\n        \uc774 \uacf5\uc2dd\uc774 \uc758\ubbf8\ud558\ub294 \ubc14\ub294, $\\vec{k}$\ub77c\ub294 \ubca1\ud130\ub294 \uc5b4\ub290 \ubc29\ud5a5\uc73c\ub85c \uc5bc\ub9c8\ub098 \ube68\ub9ac \uc6c0\uc9c1\uc774\ub294\uc9c0\uc5d0 \uad00\ud55c \ubca1\ud130\uc778\ub370, \ubc29\ud5a5\uacfc \uc18d\ub825\uc744 \uc815\ud558\uba74, \uc8fc\uc5b4\uc9c4 \ud568\uc218 $f(\\vec{x})$\uc758 \ud2b9\uc815 \ubc29\ud5a5\uc73c\ub85c\uc758 \uc9c4\ub3d9\uc218 \uc131\ubd84\uc774 \uc5bc\ub9c8\ub098 \ud3ec\ud568\ub418\uc5b4 \uc788\ub294\uc9c0 \uc54c \uc218 \uc788\ub2e4. \uc989, \uc774 \ud568\uc218\uac00 \uc6c0\uc9c1\uc774\ub294 \ubc29\ud5a5\uae4c\uc9c0\ub3c4 \uc54c\uc544\ub0bc \uc218 \uc788\ub2e4.<\/p>\n<p>        \uc9c8\ubb38\uc740 \uc5b8\uc81c\ub098 \ud658\uc601, \ub313\uae00\ub85c&#8230;<br \/>\n        <\/p>\n<div class=\"footnotes\">\n<ol class=\"footnotes\">\n<li id=\"footnote_1753_1\">\n           \uc2ec\uc9c0\uc5b4 \ub09c \ubb3c\ub9ac\ud559 \uc804\uacf5\uc790\uc784.<br \/>\n           <a href=\"#footnote_link_1753_1\"><br \/>\n            [\ubcf8\ubb38\uc73c\ub85c]<br \/>\n           <\/a>\n<\/li>\n<li id=\"footnote_1753_2\">\n           \uadf8\ub7ec\ub098 \uadf8\uac83\uc744 \uac00\ubccd\uac8c \ud558\uae30\ub294 \uacb0\ucf54 \uc27d\uc9c0 \uc54a\ub2e4. \ub09c \ub2e8\uc9c0 \uacc4\uc0b0\uc744 \ud560 \uc904 \uc54c \ubfd0\uc774\ub2e4.<br \/>\n           <a href=\"#footnote_link_1753_2\"><br \/>\n            [\ubcf8\ubb38\uc73c\ub85c]<br \/>\n           <\/a>\n<\/li>\n<li id=\"footnote_1753_3\">\n           \ud558\ub098\uc758 \ubca1\ud130\ub97c \uc815\ud558\ub294\ub370\ub294 \ubc29\ud5a5, \ud06c\uae30, \uc2dc\uc791\uc810\uc744 \uc54c\uc544\uc57c \ud55c\ub2e4. \ub610\ub294 \uc2dc\uc791\uc810\uacfc \ub05d\uc810\uc744 \uc54c\uc544\uc57c \ud55c\ub2e4. \uac19\uc740 \uc2dc\uc791\uc810\uc744 \uac16\ub294 \ubca1\ud130\ub4e4 \ub07c\ub9ac\ub294 \ub367\uc148\uacfc \uae38\uc774 \ubcc0\ud658\uc774 \uac00\ub2a5\ud558\uba70 \uc774\ub7f0 \uc560\ub4e4\uc744 \ubaa8\uc544\ub193\uc740 \uacf3\uc744 \ubca1\ud130 \uacf5\uac04\uc774\ub77c\uace0 \ubd80\ub978\ub2e4. \uadf8\ub9ac\uace0 \ud558\ub098\uc758 \uc2dc\uc791\uc810\ub9c8\ub2e4 \ubca1\ud130\uacf5\uac04\uc774 \uc788\uc73c\uba70, \uadf8 \ubca1\ud130 \uacf5\uac04\uc744 \ud0c4\uc820\ud2b8 \uacf5\uac04\uc774\ub77c\uace0 \ubd80\ub978\ub2e4. \uc11c\ub85c \ub2e4\ub978 \ud0c4\uc820\ud2b8 \uacf5\uac04\uc5d0 \uc18d\ud558\ub294 \ubca1\ud130\ub4e4 \ub07c\ub9ac\ub294 \ub354\ud558\uac70\ub098 \ube84 \uc218 \uc5c6\uc73c\uba70, \ud56d\uc0c1 \ud3c9\ud589\uc774\ub3d9 \ud574\uc11c \ub354\ud558\uac70\ub098 \ube7c\uc918\uc57c \ud55c\ub2e4. \ub9cc\uc57d \uacf5\uac04\uc774 \ud718\uc5b4\uc838 \uc788\uc73c\uba74 \uadf8\uac74 \uadf8\ub54c \uac00\uc11c \uc0dd\uac01\ud558\uc790. \uadf8\ub7ec\ub2c8\uae4c, \uc5ec\uae30\uc11c\ub294 \ubc29\ud5a5\uacfc \ud06c\uae30\ub9cc \uc54c\uc544\ub3c4 \ub41c\ub2e4\uace0 \ud558\uc790. \ucacc.<br \/>\n           <a href=\"#footnote_link_1753_3\"><br \/>\n            [\ubcf8\ubb38\uc73c\ub85c]<br \/>\n           <\/a>\n<\/li>\n<li id=\"footnote_1753_4\">\n           \uc801\ubd84 \uc21c\uc11c\ub97c \uc774\ub807\uac8c \ub9d8\ub300\ub85c \ubc14\uafd4\ub3c4 \ub418\ub294\uc9c0 \ub610\ud55c \ud574\uc11d\ud559 \uc2dc\uac04\uc5d0 \uc99d\uba85\ud558\ub294 \ub0b4\uc6a9\uc778\ub370, \uace8\uce58\uc544\ud504\ubbc0\ub85c \uadf8\ub0e5 \ub118\uc5b4\uac04\ub2e4. \uc544\ubb34\ud2bc \uc560\ub4e4\uc774 \uc798 \uc218\ub834\ud558\uae30\ub9cc \ud558\uba74 \uc7a5\ub561\uc774\ub2e4. \ubc1c\uc0b0\ud558\ub294 \uacbd\uc6b0\uc5d0\ub294 \ub9d8\ub300\ub85c \ubc14\uafb8\uba74 \uc548\ub418\uc9c0\ub9cc, \uc218\ub834\ud558\ub294 \uacbd\uc6b0\uc5d0\ub294 \uc801\ubd84 \uc21c\uc11c\uc5d0 \uad00\uacc4 \uc5c6\uc774 \uc5b8\uc81c\ub098 \ud558\ub098\uc758 \uac12\uc73c\ub85c\ub9cc \uc218\ub834\ud558\uae30 \ub54c\ubb38\uc5d0 \uac71\uc815\uc5c6\uc774 \ubc14\uafd4\uc918\ub3c4 \ub41c\ub2e4.<br \/>\n           <a href=\"#footnote_link_1753_4\"><br \/>\n            [\ubcf8\ubb38\uc73c\ub85c]<br \/>\n           <\/a>\n<\/li>\n<li id=\"footnote_1753_5\">\n           \uc815\ud655\ud788\ub294 \uadf8\ub188\uc774 \uadf8\ub188\uc740 \uc544\ub2c8\uc9c0\ub9cc, \ubaa8\ub4e0 \uc120\ud615\uc5f0\uc0b0\uc790\ub294 \ud589\ub82c\ub85c \ud45c\ud604\ud560 \uc218 \uc788\ub2e4. \uadf8\ub9ac\uace0 \ubaa8\ub4e0 \ud589\ub82c\uc740 \uc120\ud615\uc5f0\uc0b0\uc790\uc774\ub2e4. \uadf8\ub7ec\ub2c8\uae4c \uadf8\ub188\uc774 \uadf8\ub188\uc774\ub77c\uace0 \uc0dd\uac01\ud574\ub3c4 \ubcc4 \ubb38\uc81c\ub294 \uc5c6\ub2e4.<br \/>\n           <a href=\"#footnote_link_1753_5\"><br \/>\n            [\ubcf8\ubb38\uc73c\ub85c]<br \/>\n           <\/a>\n<\/li>\n<li id=\"footnote_1753_6\">\n           \uc5ec\uae30\uc11c\ub294 \ub0b4\uac00 \uc6c3\uc790\uace0 \uc774\ub807\uac8c \ub9d0\ud558\uace0 \uc788\ub2e4. \uc544\ubb34\ub370\uc11c\ub098 &#8220;\ubaa8\ub978\ub2e4&#8221; = &#8220;\uc544\ubb34\uac70\ub098&#8221;\ub77c\uace0 \uc8fc\uc7a5\ud558\uba74 \uc218\ud559\uc790\ub4e4\uc774 \ube44\uc6c3\uc744\ud14c\ub2c8 \uc368\ub3c4 \ub418\ub294\uc9c0 \ud655\uc778\ud55c \ud6c4\uc5d0 \uc4f0\uc790. \ubb3c\ub860 \uc5ec\uae30\uc11c\ub294 \uc368\ub3c4 \ub418\ub2c8\uae4c \uc4f0\uace0 \uc788\uc74c.<br \/>\n           <a href=\"#footnote_link_1753_6\"><br \/>\n            [\ubcf8\ubb38\uc73c\ub85c]<br \/>\n           <\/a>\n<\/li>\n<li id=\"footnote_1753_7\">\n           \ub2e8, \uc774\ub54c\uc758 \ubb34\ud55c \ucc28\uc6d0\uc740 \uc790\uc5f0\uc218 \ub18d\ub3c4\ub97c \uac00\uc9c0\ub294 \ubb34\ud55c \ucc28\uc6d0\uc774\ub2e4. \uc2e4\uc218 \ub18d\ub3c4\ub97c \uac00\uc9c0\ub294 \ubb34\ud55c \ucc28\uc6d0\uc744 \ub2e4\ub8e8\ub824\uba74 \ud30c\uc778\ub9cc \uc801\ubd84\ub860\uc744 \uacf5\ubd80\ud574\uc57c \ud55c\ub2e4. \uc0ac\uc2e4\uc740 \ud30c\uc778\ub9cc\uc758 \uacbd\ub85c \uc801\ubd84\uc774 \ud30c\ub3d9\ud568\uc218\uc758 \uc2e4\uc218 \ub18d\ub3c4 \ubb34\ud55c\ucc28\uc6d0\uc5d0 \ub300\ud55c \ud478\ub9ac\uc5d0 \ubcc0\ud658\uc774\ub77c\ub2a5 -_-;<br \/>\n           <a href=\"#footnote_link_1753_7\"><br \/>\n            [\ubcf8\ubb38\uc73c\ub85c]<br \/>\n           <\/a>\n<\/li>\n<\/ol>\n<\/div>\n<p><script type=\"text\/javascript\">\n         tistoryFootnote.add(1753,1,\"\\uc2ec\\uc9c0\\uc5b4 \\ub09c \\ubb3c\\ub9ac\\ud559 \\uc804\\uacf5\\uc790\\uc784.\");\ntistoryFootnote.add(1753,2,\"\\uadf8\\ub7ec\\ub098 \\uadf8\\uac83\\uc744 \\uac00\\ubccd\\uac8c \\ud558\\uae30\\ub294 \\uacb0\\ucf54 \\uc27d\\uc9c0 \\uc54a\\ub2e4. \\ub09c \\ub2e8\\uc9c0 \\uacc4\\uc0b0\\uc744 \\ud560 \\uc904 \\uc54c \\ubfd0\\uc774\\ub2e4.\");\ntistoryFootnote.add(1753,3,\"\\ud558\\ub098\\uc758 \\ubca1\\ud130\\ub97c \\uc815\\ud558\\ub294\\ub370\\ub294 \\ubc29\\ud5a5, \\ud06c\\uae30, \\uc2dc\\uc791\\uc810\\uc744 \\uc54c\\uc544\\uc57c \\ud55c\\ub2e4. \\ub610\\ub294 \\uc2dc\\uc791\\uc810\\uacfc \\ub05d\\uc810\\uc744 \\uc54c\\uc544\\uc57c \\ud55c\\ub2e4. \\uac19\\uc740 \\uc2dc\\uc791\\uc810\\uc744 \\uac16\\ub294 \\ubca1\\ud130\\ub4e4 \\ub07c\\ub9ac\\ub294 \\ub367\\uc148\\uacfc \\uae38\\uc774 \\ubcc0\\ud658\\uc774 \\uac00\\ub2a5\\ud558\\uba70 \\uc774\\ub7f0 \\uc560\\ub4e4\\uc744 \\ubaa8\\uc544\\ub193\\uc740 \\uacf3\\uc744 \\ubca1\\ud130 \\uacf5\\uac04\\uc774\\ub77c\\uace0 \\ubd80\\ub978\\ub2e4. \\uadf8\\ub9ac\\uace0 \\ud558\\ub098\\uc758 \\uc2dc\\uc791\\uc810\\ub9c8\\ub2e4 \\ubca1\\ud130\\uacf5\\uac04\\uc774 \\uc788\\uc73c\\uba70, \\uadf8 \\ubca1\\ud130 \\uacf5\\uac04\\uc744 \\ud0c4\\uc820\\ud2b8 \\uacf5\\uac04\\uc774\\ub77c\\uace0 \\ubd80\\ub978\\ub2e4. \\uc11c\\ub85c \\ub2e4\\ub978 \\ud0c4\\uc820\\ud2b8 \\uacf5\\uac04\\uc5d0 \\uc18d\\ud558\\ub294 \\ubca1\\ud130\\ub4e4 \\ub07c\\ub9ac\\ub294 \\ub354\\ud558\\uac70\\ub098 \\ube84 \\uc218 \\uc5c6\\uc73c\\uba70, \\ud56d\\uc0c1 \\ud3c9\\ud589\\uc774\\ub3d9 \\ud574\\uc11c \\ub354\\ud558\\uac70\\ub098 \\ube7c\\uc918\\uc57c \\ud55c\\ub2e4. \\ub9cc\\uc57d \\uacf5\\uac04\\uc774 \\ud718\\uc5b4\\uc838 \\uc788\\uc73c\\uba74 \\uadf8\\uac74 \\uadf8\\ub54c \\uac00\\uc11c \\uc0dd\\uac01\\ud558\\uc790. \\uadf8\\ub7ec\\ub2c8\\uae4c, \\uc5ec\\uae30\\uc11c\\ub294 \\ubc29\\ud5a5\\uacfc \\ud06c\\uae30\\ub9cc \\uc54c\\uc544\\ub3c4 \\ub41c\\ub2e4\\uace0 \\ud558\\uc790. \\ucacc.\");\ntistoryFootnote.add(1753,4,\"\\uc801\\ubd84 \\uc21c\\uc11c\\ub97c \\uc774\\ub807\\uac8c \\ub9d8\\ub300\\ub85c \\ubc14\\uafd4\\ub3c4 \\ub418\\ub294\\uc9c0 \\ub610\\ud55c \\ud574\\uc11d\\ud559 \\uc2dc\\uac04\\uc5d0 \\uc99d\\uba85\\ud558\\ub294 \\ub0b4\\uc6a9\\uc778\\ub370, \\uace8\\uce58\\uc544\\ud504\\ubbc0\\ub85c \\uadf8\\ub0e5 \\ub118\\uc5b4\\uac04\\ub2e4. \\uc544\\ubb34\\ud2bc \\uc560\\ub4e4\\uc774 \\uc798 \\uc218\\ub834\\ud558\\uae30\\ub9cc \\ud558\\uba74 \\uc7a5\\ub561\\uc774\\ub2e4. \\ubc1c\\uc0b0\\ud558\\ub294 \\uacbd\\uc6b0\\uc5d0\\ub294 \\ub9d8\\ub300\\ub85c \\ubc14\\uafb8\\uba74 \\uc548\\ub418\\uc9c0\\ub9cc, \\uc218\\ub834\\ud558\\ub294 \\uacbd\\uc6b0\\uc5d0\\ub294 \\uc801\\ubd84 \\uc21c\\uc11c\\uc5d0 \\uad00\\uacc4 \\uc5c6\\uc774 \\uc5b8\\uc81c\\ub098 \\ud558\\ub098\\uc758 \\uac12\\uc73c\\ub85c\\ub9cc \\uc218\\ub834\\ud558\\uae30 \\ub54c\\ubb38\\uc5d0 \\uac71\\uc815\\uc5c6\\uc774 \\ubc14\\uafd4\\uc918\\ub3c4 \\ub41c\\ub2e4.\");\ntistoryFootnote.add(1753,5,\"\\uc815\\ud655\\ud788\\ub294 \\uadf8\\ub188\\uc774 \\uadf8\\ub188\\uc740 \\uc544\\ub2c8\\uc9c0\\ub9cc, \\ubaa8\\ub4e0 \\uc120\\ud615\\uc5f0\\uc0b0\\uc790\\ub294 \\ud589\\ub82c\\ub85c \\ud45c\\ud604\\ud560 \\uc218 \\uc788\\ub2e4. \\uadf8\\ub9ac\\uace0 \\ubaa8\\ub4e0 \\ud589\\ub82c\\uc740 \\uc120\\ud615\\uc5f0\\uc0b0\\uc790\\uc774\\ub2e4. \\uadf8\\ub7ec\\ub2c8\\uae4c \\uadf8\\ub188\\uc774 \\uadf8\\ub188\\uc774\\ub77c\\uace0 \\uc0dd\\uac01\\ud574\\ub3c4 \\ubcc4 \\ubb38\\uc81c\\ub294 \\uc5c6\\ub2e4.\");\ntistoryFootnote.add(1753,6,\"\\uc5ec\\uae30\\uc11c\\ub294 \\ub0b4\\uac00 \\uc6c3\\uc790\\uace0 \\uc774\\ub807\\uac8c \\ub9d0\\ud558\\uace0 \\uc788\\ub2e4. \\uc544\\ubb34\\ub370\\uc11c\\ub098 \\\"\\ubaa8\\ub978\\ub2e4\\\" = \\\"\\uc544\\ubb34\\uac70\\ub098\\\"\\ub77c\\uace0 \\uc8fc\\uc7a5\\ud558\\uba74 \\uc218\\ud559\\uc790\\ub4e4\\uc774 \\ube44\\uc6c3\\uc744\\ud14c\\ub2c8 \\uc368\\ub3c4 \\ub418\\ub294\\uc9c0 \\ud655\\uc778\\ud55c \\ud6c4\\uc5d0 \\uc4f0\\uc790. \\ubb3c\\ub860 \\uc5ec\\uae30\\uc11c\\ub294 \\uc368\\ub3c4 \\ub418\\ub2c8\\uae4c \\uc4f0\\uace0 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