{"id":336,"date":"2023-07-06T05:26:21","date_gmt":"2023-07-06T05:26:21","guid":{"rendered":"https:\/\/mathority.org\/ko\/%ec%a7%81%ea%b5%90-%ed%96%89%eb%a0%ac-%ec%98%88%ec%a0%9c-%ec%86%8d%ec%84%b1-2x2-3x3\/"},"modified":"2023-07-06T05:26:21","modified_gmt":"2023-07-06T05:26:21","slug":"%ec%a7%81%ea%b5%90-%ed%96%89%eb%a0%ac-%ec%98%88%ec%a0%9c-%ec%86%8d%ec%84%b1-2x2-3x3","status":"publish","type":"post","link":"https:\/\/mathority.org\/ko\/%ec%a7%81%ea%b5%90-%ed%96%89%eb%a0%ac-%ec%98%88%ec%a0%9c-%ec%86%8d%ec%84%b1-2x2-3x3\/","title":{"rendered":"\uc9c1\uad50\ud589\ub82c"},"content":{"rendered":"<p>\uc774 \ud398\uc774\uc9c0\uc5d0\uc11c\ub294 \uc9c1\uad50 \ud589\ub82c\uc774 \ubb34\uc5c7\uc778\uc9c0, \ud589\ub82c\uc758 \uc5ed\ud589\ub82c\uacfc \uc5b4\ub5a4 \uad00\uacc4\uac00 \uc788\ub294\uc9c0 \uc0b4\ud3b4\ubcf4\uaca0\uc2b5\ub2c8\ub2e4. \uc644\ubcbd\ud558\uac8c \uc774\ud574\ud558\uae30 \uc704\ud574 \uba87 \uac00\uc9c0 \uc608\ub3c4 \ubcfc \uc218 \uc788\uc2b5\ub2c8\ub2e4. \ub610\ud55c, \uc9c1\uad50 \ud589\ub82c\uc744 \ud655\uc778\ud558\ub294 \uacf5\uc2dd\uc744 \uac00\ub974\uccd0\uc11c \uc774\ub97c \ube60\ub974\uac8c \ucc3e\ub294 \ubc29\ubc95\uc744 \uc54c \uc218 \uc788\uc2b5\ub2c8\ub2e4. \ub9c8\uc9c0\ub9c9\uc73c\ub85c \uc774\ub7ec\ud55c \ud2b9\uc815 \ud589\ub82c\uc758 \uc18d\uc131\uacfc \uc751\uc6a9\ubfd0\ub9cc \uc544\ub2c8\ub77c \uc77c\ubc18\uc801\uc778 \ud574\uacb0 \uc2dc\ud5d8 \uc5f0\uc2b5\ub3c4 \ud655\uc778\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<h2 class=\"wp-block-heading\"> \uc9c1\uad50 \ud589\ub82c\uc774\ub780 \ubb34\uc5c7\uc785\ub2c8\uae4c?<\/h2>\n<p> \uc9c1\uad50\ud589\ub82c\uc758 \uc815\uc758\ub294 \ub2e4\uc74c\uacfc \uac19\uc2b5\ub2c8\ub2e4. <\/p>\n<div style=\"background-color:#dff6ff;padding-top: 20px; padding-bottom: 0.5px; padding-right: 40px; padding-left: 30px\" class=\"has-background\">\n<p style=\"text-align:left\"> <strong>\uc9c1\uad50 \ud589\ub82c\uc740<\/strong> \uc804\uce58(\ub610\ub294 \uc804\uce58)\ub97c \uacf1\ud558\uba74 \ub2e8\uc704 \ud589\ub82c\uacfc \uac19\uc740 \uc815\uc0ac\uac01\ud615 \uc2e4\uc218 \ud589\ub82c\uc785\ub2c8\ub2e4. \uc989, \ub2e4\uc74c \uc870\uac74\uc774 \ucda9\uc871\ub429\ub2c8\ub2e4.<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-6ce7debd9ea0083703f398f280e534f3_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"A\\cdot A^t = A^t \\cdot A =I\" title=\"Rendered by QuickLaTeX.com\" height=\"15\" width=\"147\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<p style=\"text-align:left\"> \uae08<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-25b206f25506e6d6f46be832f7119ffa_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"A\" title=\"Rendered by QuickLaTeX.com\" height=\"13\" width=\"13\" style=\"vertical-align: 0px;\"><\/p>\n<p> \uc9c1\uad50 \ud589\ub82c\uc774\uace0<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-afd3cedfe0f405ed9f2d585b5ac1d8cb_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"A^t\" title=\"Rendered by QuickLaTeX.com\" height=\"15\" width=\"18\" style=\"vertical-align: 0px;\"><\/p>\n<p> \uc804\uce58\ub41c \ud589\ub82c\uc744 \ub098\ud0c0\ub0c5\ub2c8\ub2e4.<\/p>\n<\/div>\n<p> \uc774 \uc870\uac74\uc774 \ucda9\uc871\ub418\ub824\uba74 \uc9c1\uad50 \ud589\ub82c\uc758 \uc5f4\uacfc \ud589\uc774 \uc9c1\uad50 \ub2e8\uc704 \ubca1\ud130\uc5ec\uc57c \ud569\ub2c8\ub2e4. \uc989, \uc815\uaddc \uc9c1\uad50 \uae30\uc800\ub97c \ud615\uc131\ud574\uc57c \ud569\ub2c8\ub2e4. \uc774\ub7ec\ud55c \uc774\uc720\ub85c \uc77c\ubd80 \uc218\ud559\uc790\ub4e4\uc740 \uc774\ub97c <strong>\uc815\uaddc\uc9c1\uad50\ud589\ub82c(orthonormal matrices)\uc774\ub77c\uace0<\/strong> \ubd80\ub974\uae30\ub3c4 \ud569\ub2c8\ub2e4.<\/p>\n<h2 class=\"wp-block-heading\"> \uc9c1\uad50\ud589\ub82c\uc758 \uc5ed\ud589\ub82c<\/h2>\n<p> \uc9c1\uad50 \ud589\ub82c\uc758 \uac1c\ub150\uc744 \uc124\uba85\ud558\ub294 \ub610 \ub2e4\ub978 \ubc29\ubc95\uc740 \uc5ed\ud589\ub82c\uc744 \uc774\uc6a9\ud558\ub294 \uac83\uc785\ub2c8\ub2e4. \uc65c\ub0d0\ud558\uba74 <strong>\uc9c1\uad50 \ud589\ub82c\uc758 \uc804\uce58(\ub610\ub294 \uc804\uce58) \ud589\ub82c\uc740 \uadf8 \uc5ed\ud589\ub82c\uacfc \ub3d9\uc77c\ud558\uae30 \ub54c\ubb38\uc785\ub2c8\ub2e4.<\/strong><\/p>\n<p> \uc774 \uc815\ub9ac\ub97c \uc644\uc804\ud788 \uc774\ud574\ud558\ub824\uba74 <a href=\"https:\/\/mathority.org\/ko\/\u110b\u1167\u11a8\u1112\u1162\u11bc\u1105\u1167\u11af\/\">\ud589\ub82c\uc744 \ubc18\uc804\uc2dc\ud0a4\ub294<\/a> \ubc29\ubc95\uc744 \uc544\ub294 \uac83\uc774 \uc911\uc694\ud569\ub2c8\ub2e4. \uc774 \ub9c1\ud06c\uc5d0\uc11c\ub294 \uc5ed\ud589\ub82c\uacfc \ubaa8\ub4e0 \uc18d\uc131\uc5d0 \ub300\ud55c \uc790\uc138\ud55c \uc124\uba85\uc744 \ucc3e\uc744 \uc218 \uc788\uc73c\uba70 \ub2e8\uacc4\ubcc4\ub85c \uc5f0\uc2b5\ud560 \uc218 \uc788\ub294 \uc5f0\uc2b5 \ubb38\uc81c\ub3c4 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<p> \uc9c1\uad50 \ud589\ub82c\uc758 \uc5ed\ud589\ub82c\uc740 \uc9c1\uad50 \ud589\ub82c \uc870\uac74\uacfc \uc5ed\ud589\ub82c\uc758 \uc8fc\uc694 \uc18d\uc131\uc744 \uc0ac\uc6a9\ud558\uc5ec \uc804\uce58\uc640 \ub3d9\uc77c\ud558\ub2e4\ub294 \uac83\uc744 \uc27d\uac8c \ud45c\uc2dc\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-36f7666e4730a6311c088c7e8d7f0f38_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\left.\\begin{array}{c} A \\cdot A^t =I \\\\[2ex] A \\cdot A^{-1} = I\\end{array} \\right\\} \\longrightarrow \\ A^t=A^{-1}\" title=\"Rendered by QuickLaTeX.com\" height=\"65\" width=\"231\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<p> \ub530\ub77c\uc11c \uc9c1\uad50 \ud589\ub82c\uc740 \ud56d\uc0c1 <a href=\"https:\/\/mathority.org\/ko\/\u110c\u1165\u11bc\u1100\u1172-\u1104\u1169\u1102\u1173\u11ab-\u110b\u1167\u11a8\u1112\u1162\u11bc\u1105\u1167\u11af-\u110b\u1168\u110c\u1166-\u1106\u1175\u11be-\u1109\u1169\u11a8\u1109\u1165\u11bc\u110b\u1173\u11ab-\u110b\u1165\u11ab\u110c\u1166\u110b\u1175\u11b8\u1102\u1175\u1101\u1161?\/\">\uc5ed\ud589\ub82c\uc774<\/a> \ub429\ub2c8\ub2e4. \uc989, \uc815\uaddc \ub610\ub294 \ube44\ud1f4\ud654 \ud589\ub82c\uc774 \ub429\ub2c8\ub2e4.<\/p>\n<p> \ub2e4\uc74c\uc73c\ub85c \ubaa8\ub4e0 \uac83\uc758 \uac1c\ub150 \uc774\ud574\ub97c \ub3d5\uae30 \uc704\ud574 \uc9c1\uad50\ud589\ub82c\uc758 \uba87 \uac00\uc9c0 \uc608\ub97c \uc0b4\ud3b4\ubcf4\uaca0\uc2b5\ub2c8\ub2e4.<\/p>\n<h2 class=\"wp-block-heading\"> 2\u00d72 \uc9c1\uad50 \ud589\ub82c\uc758 \uc608<\/h2>\n<p> \ub2e4\uc74c \ud589\ub82c\uc740 2\u00d72 \ucc28\uc6d0\uc758 \uc9c1\uad50 \ud589\ub82c\uc785\ub2c8\ub2e4. <\/p>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/uploads\/2023\/07\/matrice-orthogonale-de-dimension-22152-1.webp\" alt=\"2x2 \ucc28\uc6d0\uc758 \uc9c1\uad50 \ud589\ub82c\" class=\"wp-image-3302\" width=\"132\" height=\"70\" srcset=\"\" sizes=\"auto, \"><\/figure>\n<\/div>\n<p> \uc804\uce58\uc5d0 \uc758\ud55c \uacf1\uc744 \uacc4\uc0b0\ud558\uc5ec \uc9c1\uad50\uc784\uc744 \ud655\uc778\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-d157361ae2a13dbeabc4ba1aab7f8a94_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle A\\cdot A^t\" title=\"Rendered by QuickLaTeX.com\" height=\"16\" width=\"44\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-f7baa091c2fd963507b93e6bec5c386b_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle A\\cdot A^t= \\begin{pmatrix} 0 &amp; 1 \\\\[1.1ex] -1 &amp; 0 \\end{pmatrix} \\cdot \\begin{pmatrix} 0 &amp; -1 \\\\[1.1ex] 1 &amp; 0 \\end{pmatrix} = \\begin{pmatrix} 1 &amp; 0 \\\\[1.1ex] 0 &amp; 1 \\end{pmatrix}\" title=\"Rendered by QuickLaTeX.com\" height=\"54\" width=\"315\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<p> \uacb0\uacfc\ub294 \ub3d9\uc77c \ud589\ub82c\uc744 \uc81c\uacf5\ud558\ubbc0\ub85c A\uac00 \uc9c1\uad50 \ud589\ub82c\uc784\uc744 \ud655\uc778\ud569\ub2c8\ub2e4.<\/p>\n<h2 class=\"wp-block-heading\"> 3\u00d73 \uc9c1\uad50 \ud589\ub82c\uc758 \uc608<\/h2>\n<p> \ub2e4\uc74c \ud589\ub82c\uc740 3\u00d73\ucc28\uc6d0\uc758 \uc9c1\uad50\ud589\ub82c\uc774\ub2e4. <\/p>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/uploads\/2023\/07\/matrice-orthogonale-de-dimension-32153-1.webp\" alt=\"3x3 \ucc28\uc6d0\uc758 \uc9c1\uad50 \ud589\ub82c\" class=\"wp-image-3304\" width=\"193\" height=\"102\" srcset=\"\" sizes=\"auto, \"><\/figure>\n<\/div>\n<p> \ud589\ub82c A\uc5d0 \uc804\uce58\ub97c \uacf1\ud558\uc5ec \uc9c1\uad50\uc784\uc744 \ubcf4\uc5ec\uc904 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-35687f56ff4ad5d1b19ea673b4ac85de_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle A\\cdot A^t = \\begin{pmatrix}0.8&amp;0.6&amp;0\\\\[1.1ex] -0.6&amp;0.8&amp;0\\\\[1.1ex] 0&amp;0&amp;1\\end{pmatrix}\\cdot \\begin{pmatrix}0.8&amp;-0.6&amp;0\\\\[1.1ex] 0.6&amp;0.8&amp;0\\\\[1.1ex] 0&amp;0&amp;1\\end{pmatrix}= \\begin{pmatrix} 1 &amp; 0 &amp; 0\\\\[1.1ex] 0 &amp; 1 &amp; 0 \\\\[1.1ex] 0&amp;0&amp;1\\end{pmatrix}\" title=\"Rendered by QuickLaTeX.com\" height=\"85\" width=\"453\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<p> \ud574\uac00 \uc720\ub2c8\ud0c0\ub9ac \ud589\ub82c\uc774\ubbc0\ub85c A\uac00 \uc9c1\uad50 \ud589\ub82c\uc784\uc744 \ubcf4\uc5ec\uc90d\ub2c8\ub2e4.<\/p>\n<h2 class=\"wp-block-heading\"> 2&#215;2 \uc9c1\uad50 \ud589\ub82c\uc744 \ucc3e\ub294 \uacf5\uc2dd<\/h2>\n<div class=\"adsb30\" style=\" margin:px; text-align:\"><\/div>\n<p> \uadf8\ub7f0 \ub2e4\uc74c \ucc28\uc218 2\uc758 \ubaa8\ub4e0 \uc9c1\uad50 \ud589\ub82c\uc774 \ub3d9\uc77c\ud55c \ud328\ud134\uc744 \ub530\ub978\ub2e4\ub294 \uc99d\uac70\ub97c \ubcfc \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<p> \ud06c\uae30\uac00 2\u00d72\uc778 \uc77c\ubc18 \ud589\ub82c\uc744 \uc0dd\uac01\ud574 \ubcf4\uc138\uc694.<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-ac19d6ab63d390a9340cbce4014b1136_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle A=\\begin{pmatrix} a &amp; b \\\\[1.1ex] c &amp; d \\end{pmatrix}\" title=\"Rendered by QuickLaTeX.com\" height=\"54\" width=\"96\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<p> \uc774 \ud589\ub82c\uc774 \uc9c1\uad50\ud558\ub824\uba74 \ub2e4\uc74c \ud589\ub82c \ubc29\uc815\uc2dd\uc744 \ucda9\uc871\ud574\uc57c \ud569\ub2c8\ub2e4.<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-05ba7bc31dc95f239c8ddb0ffdd72a81_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle A\\cdot A^t =I\" title=\"Rendered by QuickLaTeX.com\" height=\"16\" width=\"78\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-1e108701513ef6f2118e3b7d32657cd8_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle \\begin{pmatrix} a &amp; b \\\\[1.1ex] c &amp; d \\end{pmatrix} \\cdot \\begin{pmatrix} a &amp; c \\\\[1.1ex] b &amp; d \\end{pmatrix} =\\begin{pmatrix} 1 &amp; 0 \\\\[1.1ex] 0 &amp; 1 \\end{pmatrix}\" title=\"Rendered by QuickLaTeX.com\" height=\"54\" width=\"216\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<p> \ud589\ub82c \uacf1\uc148\uc744 \ud480\uba74 \ub2e4\uc74c \ubc29\uc815\uc2dd\uc744 \uc5bb\uc2b5\ub2c8\ub2e4.<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-d5435c614cb0da442fe04f65aec89637_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle \\begin{pmatrix} a^2+b^2 &amp; ac+bd \\\\[1.1ex] ac+bd &amp; c^2+d^2 \\end{pmatrix}=\\begin{pmatrix} 1 &amp; 0 \\\\[1.1ex] 0 &amp; 1 \\end{pmatrix}\" title=\"Rendered by QuickLaTeX.com\" height=\"54\" width=\"233\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-f8897132ecdbf389450e8c5fa1707226_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle \\begin{array}{c}a^2+b^2=1 \\\\[2ex] ac+bd=0 \\\\[2ex] c^2+d^2=1 \\end{array} \\qquad \\begin{array}{l} (1) \\\\[2ex] (2) \\\\[2ex] (3) \\end{array}\" title=\"Rendered by QuickLaTeX.com\" height=\"95\" width=\"162\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<p> \uc790\uc138\ud788 \uc0b4\ud3b4\ubcf4\uba74 \uc774\ub7ec\ud55c \ub4f1\uc2dd\uc740 <em>\uae30\ubcf8\uc801\uc778 \ud53c\ud0c0\uace0\ub77c\uc2a4 \uc0bc\uac01\ubc95 \uad00\uacc4\uc640<\/em> \ub9e4\uc6b0 \ube44\uc2b7\ud574 \ubcf4\uc785\ub2c8\ub2e4.<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-cbd8ab83a790807844d1d30e63429337_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle \\sin ^2\\alpha+\\cos ^2\\alpha=1\" title=\"Rendered by QuickLaTeX.com\" height=\"18\" width=\"143\" style=\"vertical-align: -2px;\"><\/p>\n<\/p>\n<p> \uacb0\uacfc\uc801\uc73c\ub85c, \ubc29\uc815\uc2dd (1)\uacfc (3)\uc744 \ub9cc\uc871\ud558\ub294 \ud56d\uc740 \ub2e4\uc74c\uacfc \uac19\uc2b5\ub2c8\ub2e4.<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-9abeb023c5050d8d7f6fbab8c52227ba_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle \\begin{array}{l} a = \\cos \\theta \\qquad \\qquad \\qquad c = \\sin\\phi \\\\[2ex] b = \\sin \\theta \\qquad \\qquad \\qquad d = \\cos \\phi\\end{array}\" title=\"Rendered by QuickLaTeX.com\" height=\"54\" width=\"242\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<p> \ub610\ud55c \ub450 \ubc88\uc9f8 \ubc29\uc815\uc2dd\uc5d0 \uac12\uc744 \ub300\uc785\ud558\uc5ec \ub450 \uac01\ub3c4 \uc0ac\uc774\uc758 \uad00\uacc4\ub97c \uc5bb\uc2b5\ub2c8\ub2e4. <\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-9b210cbf7eb8602c723c54204fc5ad8d_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle ac+bd=0\" title=\"Rendered by QuickLaTeX.com\" height=\"14\" width=\"88\" style=\"vertical-align: -2px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-8c5edfeb3556ee37b43da4afaeb0c3f6_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle \\cos\\theta\\sin\\phi+\\sin\\theta\\cos\\phi=0\" title=\"Rendered by QuickLaTeX.com\" height=\"16\" width=\"202\" style=\"vertical-align: -4px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-b2b1e1085946911044e2758ca2783eb8_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle \\tan\\phi=-\\tan\\theta\" title=\"Rendered by QuickLaTeX.com\" height=\"16\" width=\"117\" style=\"vertical-align: -4px;\"><\/p>\n<\/p>\n<p> \uc989, \ub2e4\uc74c \ub450 \uac00\uc9c0 \uc870\uac74 \uc911 \ud558\ub098\ub97c \ucda9\uc871\ud574\uc57c \ud569\ub2c8\ub2e4.<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-0eb6746afdcb971294de82ecebad37b9_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle \\text{si} \\quad c=\\sin\\phi=-\\sin\\theta \\quad \\longrightarrow \\quad  d=\\cos\\phi=\\cos\\theta\" title=\"Rendered by QuickLaTeX.com\" height=\"16\" width=\"373\" style=\"vertical-align: -4px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-6face2f33e95163135f12204424969f0_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle \\text{si} \\quad d=\\cos \\phi=-\\cos \\theta \\quad \\longrightarrow \\quad c=\\sin\\phi=\\sin\\theta\" title=\"Rendered by QuickLaTeX.com\" height=\"16\" width=\"373\" style=\"vertical-align: -4px;\"><\/p>\n<\/p>\n<p> \ub530\ub77c\uc11c \uacb0\ub860\uc801\uc73c\ub85c \uc9c1\uad50 \ud589\ub82c\uc740 \ub2e4\uc74c \ub450 \ud589\ub82c \uc911 \ud558\ub098\uc758 \uad6c\uc870\ub97c \uac00\uc838\uc57c \ud569\ub2c8\ub2e4. <\/p>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/uploads\/2023\/07\/formule-de-la-matrice-orthogonale-de-dimension-22152-1.webp\" alt=\"2x2 \ucc28\uc6d0\uc758 \uc9c1\uad50 \ud589\ub82c \uacf5\uc2dd\" class=\"wp-image-3267\" width=\"623\" height=\"143\" srcset=\"\" sizes=\"auto, \"><\/figure>\n<\/div>\n<p> \uae08<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-356a08e839ab6974a16448e16e56745d_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\theta\" title=\"Rendered by QuickLaTeX.com\" height=\"12\" width=\"9\" style=\"vertical-align: 0px;\"><\/p>\n<p> \uc2e4\uc218\uc785\ub2c8\ub2e4.<\/p>\n<p> \uc2e4\uc81c\ub85c \uc608\ub97c \ub4e4\uc5b4 \ub2e4\uc74c \uac12\uc744 \ubd80\uc5ec\ud558\uba74<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-d3f94c7fef174aa94efe99c9aa192cab_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle\\theta=\\frac{\\pi}{2}\" title=\"Rendered by QuickLaTeX.com\" height=\"32\" width=\"45\" style=\"vertical-align: -12px;\"><\/p>\n<p> \uccab \ubc88\uc9f8 \uad6c\uc870\ub97c \ucde8\ud558\uba74 &#8220;2\u00d72 \uc9c1\uad50 \ud589\ub82c\uc758 \uc608&#8221; \uc139\uc158\uc5d0\uc11c \uc9c1\uad50\uc784\uc744 \ud655\uc778\ud55c \ud589\ub82c\uc744 \uc5bb\uc744 \uac83\uc785\ub2c8\ub2e4. <\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-1a331cab64745933f7c8a5009c799be6_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle M_1 \\left(\\theta =\\frac{\\pi}{2}\\right)=\\begin{pmatrix} \\cos \\cfrac{\\pi}{2} &amp;\\sin \\cfrac{\\pi}{2} \\\\[4ex] -\\sin \\cfrac{\\pi}{2} &amp; \\cos \\cfrac{\\pi}{2} \\end{pmatrix}=\\begin{pmatrix} \\vphantom{\\frac{\\pi}{2}}0 &amp;1 \\\\[2ex]\\vphantom{\\frac{\\pi}{2}} -1 &amp; 0 \\end{pmatrix}\" title=\"Rendered by QuickLaTeX.com\" height=\"107\" width=\"366\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<div class=\"adsb30\" style=\" margin:12px; text-align:center\">\n<div id=\"ezoic-pub-ad-placeholder-118\"><\/div>\n<\/div>\n<h2 class=\"wp-block-heading\"> \uc9c1\uad50\ud589\ub82c \uc18d\uc131<\/h2>\n<p> \uc774 \uc720\ud615\uc758 \ub9e4\ud2b8\ub9ad\uc2a4\uc758 \ud2b9\uc9d5\uc740 \ub2e4\uc74c\uacfc \uac19\uc2b5\ub2c8\ub2e4.<\/p>\n<ul>\n<li> \uc9c1\uad50 \ud589\ub82c\uc740 \ud56d\uc0c1 \ubc18\uc804\ub420 \uc218 \uc788\uc73c\ubbc0\ub85c <a href=\"https:\/\/mathority.org\/ko\/\u1110\u1173\u11a8\u110b\u1175-\u1112\u1162\u11bc\u1105\u1167\u11af-\u1104\u1169\u1102\u1173\u11ab-\u110e\u116e\u11a8\u1110\u116c-\u1112\u1162\u11bc\u1105\u1167\u11af\/\">\ud2b9\uc774 \ud589\ub82c\uc774<\/a> \ub420 \uc218 \uc5c6\uc2b5\ub2c8\ub2e4. \uc774\ub7f0 \uc758\ubbf8\uc5d0\uc11c \uc9c1\uad50\ud589\ub82c\uc758 \uc5ed\ud589\ub82c\uc740 \ub610 \ub2e4\ub978 \uc9c1\uad50\ud589\ub82c\uc774\ub2e4.<\/li>\n<\/ul>\n<ul>\n<li> \ubaa8\ub4e0 \uc9c1\uad50 \ud589\ub82c\uc740 \ub300\uac01\ud654\ub420 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uadf8\ub7f0 \ub2e4\uc74c \uc9c1\uad50 \ud589\ub82c\uc740 <em>\uc9c1\uad50 \ub300\uac01\uc120\ud654 \uac00\ub2a5\ud558\ub2e4\uace0 \ub9d0\ud569\ub2c8\ub2e4.<\/em><\/li>\n<\/ul>\n<ul>\n<li> \uc9c1\uad50 \ud589\ub82c\uc758 \ubaa8\ub4e0 \uace0\uc720\uac12 \ub610\ub294 \uace0\uc720\uac12\uc740 1\uacfc \uac19\uc740 \ubaa8\ub4c8\ub7ec\uc2a4\ub97c \uac16\uc2b5\ub2c8\ub2e4.<\/li>\n<\/ul>\n<ul>\n<li> \uc2e4\uc218\ub85c\ub9cc \uad6c\uc131\ub41c \uc9c1\uad50 \ud589\ub82c\ub3c4 \uc77c\ubc18 \ud589\ub82c\uc785\ub2c8\ub2e4.<\/li>\n<\/ul>\n<ul>\n<li> \ubcf5\uc18c\uc218\uac00 \uc788\ub294 \ud658\uacbd\uc5d0\uc11c \uc9c1\uad50 \ud589\ub82c\uc758 \uc720\uc0ac\uccb4\ub294 \ub2e8\uc77c \ud589\ub82c\uc785\ub2c8\ub2e4.<\/li>\n<\/ul>\n<ul>\n<li> \ubd84\uba85\ud788 \ub2e8\uc704\ud589\ub82c\uc740 \uc9c1\uad50\ud589\ub82c\uc774\ub2e4.<\/li>\n<\/ul>\n<ul>\n<li> n \u00d7 n \ucc28\uc6d0\uc758 \uc9c1\uad50 \ud589\ub82c \uc138\ud2b8\uc640 \ud589\ub82c \uacf1\uc758 \uc5f0\uc0b0\uc740 \uc9c1\uad50 \uadf8\ub8f9\uc774\ub77c\ub294 \uadf8\ub8f9\uc744 \ud615\uc131\ud569\ub2c8\ub2e4. \uc989, \ub450 \uc9c1\uad50 \ud589\ub82c\uc758 \uacf1\uc740 \ub2e4\ub978 \uc9c1\uad50 \ud589\ub82c\uacfc \ub3d9\uc77c\ud569\ub2c8\ub2e4.<\/li>\n<\/ul>\n<ul>\n<li> \ub610\ud55c \uc9c1\uad50 \ud589\ub82c\uc5d0 \uc804\uce58\ub97c \uacf1\ud55c \uacb0\uacfc\ub294 \ud06c\ub85c\ub124\ucee4 \ub378\ud0c0\ub85c \ud45c\ud604\ub420 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/li>\n<\/ul>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-7d0922008f857f33f46de7551a8ff7cc_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle (A\\cdot A^{t})_{ij} = \\delta_{ij}=\\begin{cases}1 &amp; \\mbox{si }i = j, \\\\[2ex] 0 &amp; \\mbox{si }i \\ne j\\end{cases}\" title=\"Rendered by QuickLaTeX.com\" height=\"65\" width=\"238\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<ul>\n<li> \ub9c8\uc9c0\ub9c9\uc73c\ub85c \uc9c1\uad50\ud589\ub82c\uc758 \ud589\ub82c\uc2dd\uc740 \ud56d\uc0c1 +1 \ub610\ub294 -1\uc785\ub2c8\ub2e4.<\/li>\n<\/ul>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-12d5717a2cb94708642478117c7c309d_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle \\text{det}(A)=\\pm 1\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"97\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<h2 class=\"wp-block-heading\"> \uc9c1\uad50 \ud589\ub82c\uc758 \ud574\uacb0 \uc6b4\ub3d9<\/h2>\n<p> \uadf8\ub7f0 \ub2e4\uc74c \uc9c1\uad50 \ud589\ub82c\uc5d0 \ub300\ud55c \uc5f0\uc2b5 \ubb38\uc81c\ub97c \ud574\uacb0\ud574 \ubcf4\uaca0\uc2b5\ub2c8\ub2e4.<\/p>\n<ul>\n<li> \ub2e4\uc74c\uacfc \uac19\uc740 3\ucc28 \uc815\uc0ac\uac01 \ud589\ub82c\uc774 \uc8fc\uc5b4\uc9c0\uba74,\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-5c53d6ebabdbcfa4e107550ea60b1b19_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"a\" title=\"Rendered by QuickLaTeX.com\" height=\"8\" width=\"9\" style=\"vertical-align: 0px;\"><\/p>\n<p> \uadf8\ub9ac\uace0<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-f56d50c26583f9a035ff6b4e3c0ca5c0_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"b\" title=\"Rendered by QuickLaTeX.com\" height=\"12\" width=\"8\" style=\"vertical-align: 0px;\"><\/p>\n<p> \uc9c1\uad50\ud558\uac8c \ud558\ub824\uba74:<\/li>\n<\/ul>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-892ca58ec5cd36060396cb566902d65d_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle A=\\frac{1}{3}\\begin{pmatrix}a&amp;a&amp;1\\\\[1.1ex] b&amp;1&amp;b\\\\[1.1ex] 1&amp;a&amp;a\\end{pmatrix}\" title=\"Rendered by QuickLaTeX.com\" height=\"85\" width=\"140\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<p> \ud589\ub82c\uc758 \uc9c1\uad50\uc131\uc774 \ucda9\uc871\ub418\ub824\uba74 \ud589\ub82c\uc758 \uc804\uce58 \uacf1\uc774 \ud56d\ub4f1 \ud589\ub82c\uacfc \uac19\uc544\uc57c \ud569\ub2c8\ub2e4. \uadf8\ub798\uc11c:<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-301d774ec2d0663c858c91e548000749_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle A\\cdot A^t = I\" title=\"Rendered by QuickLaTeX.com\" height=\"16\" width=\"78\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-c2dc9ef8c514302f183ca66626cabc1b_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle \\frac{1}{3}\\begin{pmatrix}a&amp;a&amp;1\\\\[1.1ex] b&amp;1&amp;b\\\\[1.1ex] 1&amp;a&amp;a\\end{pmatrix} \\cdot \\frac{1}{3}\\begin{pmatrix}a&amp;b&amp;1\\\\[1.1ex] a&amp;1&amp;a\\\\[1.1ex] 1&amp;b&amp;a\\end{pmatrix}=\\begin{pmatrix}1&amp;0&amp;0\\\\[1.1ex] 0&amp;1&amp;0\\\\[1.1ex] 0&amp;0&amp;1\\end{pmatrix}\" title=\"Rendered by QuickLaTeX.com\" height=\"85\" width=\"334\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<p> \ud589\ub82c\uc744 \uacf1\ud569\ub2c8\ub2e4.<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-18a21a22f3cc9747c310d271c3fe4c5c_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle \\frac{1}{9}\\begin{pmatrix}2a^2+1&amp;ab+a+b&amp;2a+a^2\\\\[1.5ex] ab+a+b&amp;2b^2+1&amp;b+a+ab\\\\[1.5ex] 2a+a^2&amp;b+a+ab&amp;1+2a^2\\end{pmatrix} =\\begin{pmatrix}1&amp;0&amp;0\\\\[1.5ex] 0&amp;1&amp;0\\\\[1.5ex] 0&amp;0&amp;1\\end{pmatrix}\" title=\"Rendered by QuickLaTeX.com\" height=\"87\" width=\"418\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<p> \uc774\uc81c \ud574\ub2f9 \uc704\uce58\uc758 \uc694\uc18c\uac00 \uc77c\uce58\ud574\uc57c \ud558\ubbc0\ub85c \ud589\ub82c\uc758 \uc67c\ucabd \uc0c1\ub2e8\uc5d0\uc11c \ubc29\uc815\uc2dd\uc744 \uc5bb\uc744 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc544\uc9c1: <\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-3a4d0f699410c3a7de5d6af181073f8e_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle \\frac{1}{9}(2a^2+1) = 1\" title=\"Rendered by QuickLaTeX.com\" height=\"36\" width=\"113\" style=\"vertical-align: -12px;\"><\/p>\n<\/p>\n<div class=\"adsb30\" style=\" margin:12px; text-align:center\">\n<div id=\"ezoic-pub-ad-placeholder-119\"><\/div>\n<\/div>\n<p> \ubc29\uc815\uc2dd\uc744 \ud480\uace0 \ubbf8\uc9c0\uc218\ub97c \uc81c\uac70\ud569\ub2c8\ub2e4. <\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-c6700a19d58afe1d84668664734ef725_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle 2a^2+1 = 9\" title=\"Rendered by QuickLaTeX.com\" height=\"18\" width=\"89\" style=\"vertical-align: -2px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-a2007d061c6ecfda4deef22882bfce17_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle 2a^2 = 8\" title=\"Rendered by QuickLaTeX.com\" height=\"16\" width=\"59\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-5fd565f4a4ab39908601493ada1575cb_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle a^2 = 4\" title=\"Rendered by QuickLaTeX.com\" height=\"16\" width=\"50\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-2f617bc4be3760ed1e13564672a4b6ef_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle \\bm{a = \\pm 2}\" title=\"Rendered by QuickLaTeX.com\" height=\"12\" width=\"55\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<p> \uadf8\ub7ec\ub098 \uc624\ub978\ucabd \uc0c1\ub2e8 \ubaa8\uc11c\ub9ac\uc5d0 \uc788\ub294 \ubc29\uc815\uc2dd\uacfc \uac19\uc774 \uc591\uc758 \ud574\uc640 \uc77c\uce58\ud558\uc9c0 \uc54a\ub294 \ubc29\uc815\uc2dd\uc774 \uc788\uc2b5\ub2c8\ub2e4. \ub530\ub77c\uc11c <strong>\ubd80\uc815\uc801\uc778 \ud574\uacb0\ucc45\ub9cc\uc774 \uac00\ub2a5\ud569\ub2c8\ub2e4<\/strong> .<\/p>\n<p> \ubc18\uba74\uc5d0 \ubcc0\uc218\ub97c \uacc4\uc0b0\ud558\ub824\uba74<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-f56d50c26583f9a035ff6b4e3c0ca5c0_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"b\" title=\"Rendered by QuickLaTeX.com\" height=\"12\" width=\"8\" style=\"vertical-align: 0px;\"><\/p>\n<p> \uc608\ub97c \ub4e4\uc5b4 \uccab \ubc88\uc9f8 \uc5f4\uc758 \ub450 \ubc88\uc9f8 \ud589\uc5d0 \uc788\ub294 \uc6a9\uc5b4\ub97c \uc77c\uce58\uc2dc\ud0ac \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-16d30b554d24bd4b8a00b156ed1503d0_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle \\frac{1}{9}(ab+a+b) = 0\" title=\"Rendered by QuickLaTeX.com\" height=\"36\" width=\"134\" style=\"vertical-align: -12px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-fe062334bff68f2ba70f0f025d2a2d9c_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle ab+a+b = 0\" title=\"Rendered by QuickLaTeX.com\" height=\"14\" width=\"110\" style=\"vertical-align: -2px;\"><\/p>\n<\/p>\n<p> \uac12\uc744 \ub300\uccb4\ud558\uc5ec<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-5c53d6ebabdbcfa4e107550ea60b1b19_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"a\" title=\"Rendered by QuickLaTeX.com\" height=\"8\" width=\"9\" style=\"vertical-align: 0px;\"><\/p>\n<p> \ubc29\uc815\uc2dd\uc5d0\uc11c: <\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-e8e6825541c5d7e2a12df99d9dc7b3b2_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle -2b-2+b = 0\" title=\"Rendered by QuickLaTeX.com\" height=\"14\" width=\"122\" style=\"vertical-align: -2px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-a13af6b471ccdb2e6804fc02b87abc4f_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle -b =2\" title=\"Rendered by QuickLaTeX.com\" height=\"12\" width=\"52\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-27e8de15a4a0f239878f4cc4f5b8db24_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle \\bm{b =-2}\" title=\"Rendered by QuickLaTeX.com\" height=\"12\" width=\"53\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<p> \uac04\ub2e8\ud788 \ub9d0\ud574\uc11c, \uac00\ub2a5\ud55c \uc720\uc77c\ud55c \ud574\uacb0\ucc45\uc740 \ub2e4\uc74c\uacfc \uac19\uc2b5\ub2c8\ub2e4.<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-70dc1f4331f63bff4d12f4bad8ef34e3_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle \\bm{a=b =-2}\" title=\"Rendered by QuickLaTeX.com\" height=\"12\" width=\"86\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<p> \ub530\ub77c\uc11c \uc774 \uac12\uc5d0 \ud574\ub2f9\ud558\ub294 \uc9c1\uad50 \ud589\ub82c\uc740 \ub2e4\uc74c\uacfc \uac19\uc2b5\ub2c8\ub2e4.<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-cb7e7a27658da85f7b0d16b17f1f0815_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle A=\\frac{1}{3}\\begin{pmatrix}-2&amp;-2&amp;1\\\\[1.1ex] -2&amp;1&amp;-2\\\\[1.1ex] 1&amp;-2&amp;-2\\end{pmatrix}\" title=\"Rendered by QuickLaTeX.com\" height=\"85\" width=\"179\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<h2 class=\"wp-block-heading\"> \uc9c1\uad50 \ud589\ub82c\uc758 \uc751\uc6a9<\/h2>\n<p> \uc77c\ubc18\uc801\uc73c\ub85c \ub9e4\uc6b0 \uac04\ub2e8\ud55c \ud615\ud0dc\ub97c \uac16\uace0 \uc788\uae30 \ub54c\ubb38\uc5d0 \uadf8\ub807\uac8c \ubcf4\uc774\uc9c0 \uc54a\uc744 \uc218\ub3c4 \uc788\uc9c0\ub9cc, \uc9c1\uad50 \ud589\ub82c\uc740 \uc218\ud559, \ud2b9\ud788 \uc120\ud615 \ub300\uc218\ud559 \ubd84\uc57c\uc5d0\uc11c \ub9e4\uc6b0 \uc911\uc694\ud569\ub2c8\ub2e4.<\/p>\n<p> \uae30\ud558\ud559\uc5d0\uc11c \uc9c1\uad50 \ud589\ub82c\uc740 \uc2e4\uc81c \ubca1\ud130 \uacf5\uac04\uc5d0\uc11c \ub4f1\uac01 \ubcc0\ud658(\uac70\ub9ac\uc640 \uac01\ub3c4\ub97c \ubcc0\uacbd\ud558\uc9c0 \uc54a\uc74c)\uc744 \ub098\ud0c0\ub0b4\ubbc0\ub85c \uc774\ub97c \uc9c1\uad50 \ubcc0\ud658\uc774\ub77c\uace0 \ud569\ub2c8\ub2e4. \uac8c\ub2e4\uac00, \uc774\ub7ec\ud55c \ubcc0\ud658\uc740 \uace0\ub824\ub41c \ubca1\ud130 \uacf5\uac04\uc758 \ub0b4\ubd80 \ub3d9\ud615\uc785\ub2c8\ub2e4. \uc774\ub7ec\ud55c \ubcc0\ud658\uc740 <strong>\ud68c\uc804<\/strong> , <strong>\uc815\ubc18\uc0ac<\/strong> \ub610\ub294 <strong>\ubc18\uc804<\/strong> \uc77c \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<p> \ub9c8\uc9c0\ub9c9\uc73c\ub85c, \uc774\ub7ec\ud55c \uc720\ud615\uc758 \ub9e4\ud2b8\ub9ad\uc2a4\ub294 \uac15\uccb4\uc758 \uc6c0\uc9c1\uc784\uc744 \uc5f0\uad6c\ud560 \uc218 \uc788\uae30 \ub54c\ubb38\uc5d0 \ubb3c\ub9ac\ud559\uc5d0\uc11c\ub3c4 \uc0ac\uc6a9\ub429\ub2c8\ub2e4. \uadf8\ub9ac\uace0 \uadf8\ub4e4\uc740 \ud2b9\uc815 \uc7a5 \uc774\ub860\uc758 \uacf5\uc2dd\ud654\uc5d0\ub3c4 \uc0ac\uc6a9\ub429\ub2c8\ub2e4.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\uc774 \ud398\uc774\uc9c0\uc5d0\uc11c\ub294 \uc9c1\uad50 \ud589\ub82c\uc774 \ubb34\uc5c7\uc778\uc9c0, \ud589\ub82c\uc758 \uc5ed\ud589\ub82c\uacfc \uc5b4\ub5a4 \uad00\uacc4\uac00 \uc788\ub294\uc9c0 \uc0b4\ud3b4\ubcf4\uaca0\uc2b5\ub2c8\ub2e4. \uc644\ubcbd\ud558\uac8c \uc774\ud574\ud558\uae30 \uc704\ud574 \uba87 \uac00\uc9c0 \uc608\ub3c4 \ubcfc \uc218 \uc788\uc2b5\ub2c8\ub2e4. \ub610\ud55c, \uc9c1\uad50 \ud589\ub82c\uc744 \ud655\uc778\ud558\ub294 \uacf5\uc2dd\uc744 \uac00\ub974\uccd0\uc11c \uc774\ub97c \ube60\ub974\uac8c \ucc3e\ub294 \ubc29\ubc95\uc744 \uc54c \uc218 \uc788\uc2b5\ub2c8\ub2e4. \ub9c8\uc9c0\ub9c9\uc73c\ub85c \uc774\ub7ec\ud55c \ud2b9\uc815 \ud589\ub82c\uc758 \uc18d\uc131\uacfc \uc751\uc6a9\ubfd0\ub9cc \uc544\ub2c8\ub77c \uc77c\ubc18\uc801\uc778 \ud574\uacb0 \uc2dc\ud5d8 \uc5f0\uc2b5\ub3c4 \ud655\uc778\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc9c1\uad50 \ud589\ub82c\uc774\ub780 \ubb34\uc5c7\uc785\ub2c8\uae4c? \uc9c1\uad50\ud589\ub82c\uc758 \uc815\uc758\ub294 \ub2e4\uc74c\uacfc \uac19\uc2b5\ub2c8\ub2e4. \uc9c1\uad50 &hellip;<\/p>\n<p class=\"read-more\"> <a class=\"\" href=\"https:\/\/mathority.org\/ko\/%ec%a7%81%ea%b5%90-%ed%96%89%eb%a0%ac-%ec%98%88%ec%a0%9c-%ec%86%8d%ec%84%b1-2x2-3x3\/\"> <span class=\"screen-reader-text\">\uc9c1\uad50\ud589\ub82c<\/span> \ub354 \ubcf4\uae30 &raquo;<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"","footnotes":""},"categories":[31],"tags":[],"class_list":["post-336","post","type-post","status-publish","format-standard","hentry","category-31"],"yoast_head":"<!-- This site is optimized 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