{"id":332,"date":"2023-07-06T05:26:21","date_gmt":"2023-07-06T05:26:21","guid":{"rendered":"https:\/\/mathority.org\/ja\/%e7%9b%b4%e4%ba%a4%e8%a1%8c%e5%88%97%e3%81%ae%e4%be%8b-%e3%83%97%e3%83%ad%e3%83%91%e3%83%86%e3%82%a3-2x2-3x3\/"},"modified":"2023-07-06T05:26:21","modified_gmt":"2023-07-06T05:26:21","slug":"%e7%9b%b4%e4%ba%a4%e8%a1%8c%e5%88%97%e3%81%ae%e4%be%8b-%e3%83%97%e3%83%ad%e3%83%91%e3%83%86%e3%82%a3-2x2-3x3","status":"publish","type":"post","link":"https:\/\/mathority.org\/ja\/%e7%9b%b4%e4%ba%a4%e8%a1%8c%e5%88%97%e3%81%ae%e4%be%8b-%e3%83%97%e3%83%ad%e3%83%91%e3%83%86%e3%82%a3-2x2-3x3\/","title":{"rendered":"\u76f4\u4ea4\u884c\u5217"},"content":{"rendered":"<p>\u3053\u306e\u30da\u30fc\u30b8\u3067\u306f\u3001\u76f4\u4ea4\u884c\u5217\u3068\u306f\u4f55\u304b\u3001\u304a\u3088\u3073\u76f4\u4ea4\u884c\u5217\u3068\u9006\u884c\u5217\u3068\u306e\u95a2\u4fc2\u306b\u3064\u3044\u3066\u8aac\u660e\u3057\u307e\u3059\u3002\u307e\u305f\u3001\u305d\u308c\u3092\u5b8c\u5168\u306b\u7406\u89e3\u3059\u308b\u305f\u3081\u306b\u3044\u304f\u3064\u304b\u306e\u4f8b\u3082\u8868\u793a\u3055\u308c\u307e\u3059\u3002\u3055\u3089\u306b\u3001\u76f4\u4ea4\u884c\u5217\u3092\u30c1\u30a7\u30c3\u30af\u3059\u308b\u516c\u5f0f\u3082\u6559\u3048\u307e\u3059\u3002\u3053\u308c\u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u76f4\u4ea4\u884c\u5217\u3092\u3059\u3070\u3084\u304f\u898b\u3064\u3051\u308b\u65b9\u6cd5\u304c\u308f\u304b\u308a\u307e\u3059\u3002\u6700\u5f8c\u306b\u3001\u3053\u308c\u3089\u306e\u7279\u5b9a\u306e\u884c\u5217\u306e\u7279\u6027\u3068\u5fdc\u7528\u3001\u304a\u3088\u3073\u5178\u578b\u7684\u306a\u89e3\u7b54\u6e08\u307f\u306e\u8a66\u9a13\u6f14\u7fd2\u304c\u898b\u3064\u304b\u308a\u307e\u3059\u3002<\/p>\n<h2 class=\"wp-block-heading\">\u76f4\u4ea4\u884c\u5217\u3068\u306f\u4f55\u3067\u3059\u304b?<\/h2>\n<p>\u76f4\u4ea4\u884c\u5217\u306e\u5b9a\u7fa9\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002 <\/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>\u76f4\u4ea4\u884c\u5217\u306f\u3001<\/strong>\u8ee2\u7f6e\uff08\u307e\u305f\u306f\u8ee2\u7f6e\uff09\u3092\u4e57\u3058\u305f\u6b63\u65b9\u5b9f\u6570\u884c\u5217\u3067\u3042\u308a\u3001\u5358\u4f4d\u884c\u5217\u3068\u7b49\u3057\u304f\u306a\u308a\u307e\u3059\u3002\u3064\u307e\u308a\u3001\u6b21\u306e\u6761\u4ef6\u304c\u6e80\u305f\u3055\u308c\u307e\u3059\u3002<\/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\">\u91d1<\/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>\u306f\u76f4\u4ea4\u884c\u5217\u3067\u3042\u308a\u3001<\/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>\u306f\u305d\u306e\u8ee2\u7f6e\u884c\u5217\u3092\u8868\u3057\u307e\u3059\u3002<\/p>\n<\/div>\n<p>\u3053\u306e\u6761\u4ef6\u3092\u6e80\u305f\u3059\u306b\u306f\u3001\u76f4\u4ea4\u884c\u5217\u306e\u5217\u3068\u884c\u304c\u76f4\u4ea4\u5358\u4f4d\u30d9\u30af\u30c8\u30eb\u3067\u3042\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u3064\u307e\u308a\u3001\u6b63\u898f\u76f4\u4ea4\u57fa\u5e95\u3092\u5f62\u6210\u3057\u3066\u3044\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u306e\u305f\u3081\u3001\u4e00\u90e8\u306e\u6570\u5b66\u8005\u306f\u3053\u308c\u3089\u3092<strong>\u6b63\u898f\u76f4\u4ea4\u884c\u5217<\/strong>\u3068\u547c\u3076\u3053\u3068\u3082\u3042\u308a\u307e\u3059\u3002<\/p>\n<h2 class=\"wp-block-heading\">\u76f4\u4ea4\u884c\u5217\u306e\u9006\u884c\u5217<\/h2>\n<p>\u76f4\u4ea4\u884c\u5217\u306e\u6982\u5ff5\u3092\u8aac\u660e\u3059\u308b\u3082\u3046 1 \u3064\u306e\u65b9\u6cd5<strong>\u306f\u3001\u76f4\u4ea4\u884c\u5217\u306e\u8ee2\u7f6e (\u307e\u305f\u306f\u8ee2\u7f6e) \u884c\u5217\u304c\u305d\u306e\u9006\u884c\u5217\u306b\u7b49\u3057\u3044\u305f\u3081\u3001\u9006\u884c\u5217\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3059\u3002<\/strong><\/p>\n<p>\u3053\u306e\u5b9a\u7406\u3092\u5b8c\u5168\u306b\u7406\u89e3\u3059\u308b\u306b\u306f\u3001<a href=\"https:\/\/mathority.org\/ja\/\u9006\u884c\u5217\/\">\u9006\u884c\u5217\u306e<\/a>\u65b9\u6cd5\u3092\u77e5\u3063\u3066\u304a\u304f\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002\u3053\u306e\u30ea\u30f3\u30af\u3067\u306f\u3001\u9006\u884c\u5217\u3068\u305d\u306e\u3059\u3079\u3066\u306e\u30d7\u30ed\u30d1\u30c6\u30a3\u306e\u8a73\u7d30\u306a\u8aac\u660e\u304c\u898b\u3064\u304b\u308a\u3001\u3055\u3089\u306b\u30b9\u30c6\u30c3\u30d7\u3054\u3068\u306b\u89e3\u6c7a\u3055\u308c\u305f\u7df4\u7fd2\u554f\u984c\u3082\u63d0\u4f9b\u3055\u308c\u307e\u3059\u3002<\/p>\n<p>\u76f4\u4ea4\u884c\u5217\u306e\u9006\u884c\u5217\u306f\u3001\u76f4\u4ea4\u884c\u5217\u6761\u4ef6\u3068\u9006\u884c\u5217\u306e\u4e3b\u306a\u7279\u6027\u3092\u4f7f\u7528\u3057\u3066\u3001\u305d\u306e\u8ee2\u7f6e\u3068\u540c\u7b49\u3067\u3042\u308b\u3053\u3068\u3092\u7c21\u5358\u306b\u793a\u3059\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/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>\u3057\u305f\u304c\u3063\u3066\u3001\u76f4\u4ea4\u884c\u5217\u306f\u5e38\u306b<a href=\"https:\/\/mathority.org\/ja\/when-\u304b\u3099\u6b63\u898f\u884c\u5217\u307e\u305f\u306f\u53ef\u9006\u884c\u5217\u306e\u4f8b\u3068\u30d5\u309a\u30ed\u30cf\u309a\u30c6\u30a3\/\">\u53ef\u9006\u884c\u5217<\/a>\u3001\u3064\u307e\u308a\u3001\u6b63\u898f\u884c\u5217\u307e\u305f\u306f\u975e\u7e2e\u9000\u884c\u5217\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\u6b21\u306b\u3001\u76f4\u4ea4\u884c\u5217\u306e\u4f8b\u3092\u3044\u304f\u3064\u304b\u898b\u3066\u3001\u3059\u3079\u3066\u306e\u6982\u5ff5\u3092\u7406\u89e3\u3057\u307e\u3059\u3002<\/p>\n<h2 class=\"wp-block-heading\"> 2\u00d72\u76f4\u4ea4\u884c\u5217\u306e\u4f8b<\/h2>\n<p>\u6b21\u306e\u884c\u5217\u306f 2\u00d72 \u6b21\u5143\u306e\u76f4\u4ea4\u884c\u5217\u3067\u3059\u3002 <\/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 \u6b21\u5143\u306e\u76f4\u4ea4\u884c\u5217\" class=\"wp-image-3302\" width=\"132\" height=\"70\" srcset=\"\" sizes=\"auto, \"><\/figure>\n<\/div>\n<p>\u8ee2\u7f6e\u306b\u3088\u308b\u7a4d\u3092\u8a08\u7b97\u3059\u308b\u3053\u3068\u3067\u3001\u76f4\u4ea4\u3067\u3042\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3067\u304d\u307e\u3059\u3002<\/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>\u7d50\u679c\u306f\u540c\u4e00\u884c\u5217\u3068\u306a\u308b\u305f\u3081\u3001A \u304c\u76f4\u4ea4\u884c\u5217\u3067\u3042\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002<\/p>\n<h2 class=\"wp-block-heading\"> 3\u00d73\u76f4\u4ea4\u884c\u5217\u306e\u4f8b<\/h2>\n<p>\u6b21\u306e\u884c\u5217\u306f 3\u00d73 \u6b21\u5143\u306e\u76f4\u4ea4\u884c\u5217\u3067\u3059\u3002 <\/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 \u6b21\u5143\u306e\u76f4\u4ea4\u884c\u5217\" class=\"wp-image-3304\" width=\"193\" height=\"102\" srcset=\"\" sizes=\"auto, \"><\/figure>\n<\/div>\n<p>\u884c\u5217 A \u306b\u305d\u306e\u8ee2\u7f6e\u3092\u4e57\u7b97\u3059\u308b\u3053\u3068\u3067\u3001\u305d\u308c\u304c\u76f4\u4ea4\u3067\u3042\u308b\u3053\u3068\u3092\u793a\u3059\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/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>\u89e3\u306f\u30e6\u30cb\u30bf\u30ea\u884c\u5217\u3067\u3042\u308b\u305f\u3081\u3001A \u304c\u76f4\u4ea4\u884c\u5217\u3067\u3042\u308b\u3053\u3068\u3092\u793a\u3057\u307e\u3059\u3002<\/p>\n<h2 class=\"wp-block-heading\"> 2&#215;2\u76f4\u4ea4\u884c\u5217\u3092\u6c42\u3081\u308b\u516c\u5f0f<\/h2>\n<div class=\"adsb30\" style=\" margin:px; text-align:\"><\/div>\n<p>\u6b21\u306b\u3001\u6b21\u6570 2 \u306e\u3059\u3079\u3066\u306e\u76f4\u4ea4\u884c\u5217\u304c\u540c\u3058\u30d1\u30bf\u30fc\u30f3\u306b\u5f93\u3046\u3068\u3044\u3046\u8a3c\u660e\u3092\u898b\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n<p>\u30b5\u30a4\u30ba 2\u00d72 \u306e\u4e00\u822c\u7684\u306a\u884c\u5217\u3092\u8003\u3048\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/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>\u3053\u306e\u884c\u5217\u304c\u76f4\u4ea4\u3059\u308b\u306b\u306f\u3001\u6b21\u306e\u884c\u5217\u65b9\u7a0b\u5f0f\u304c\u6e80\u305f\u3055\u308c\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/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>\u884c\u5217\u306e\u4e57\u7b97\u3092\u89e3\u304f\u3068\u3001\u6b21\u306e\u65b9\u7a0b\u5f0f\u304c\u5f97\u3089\u308c\u307e\u3059\u3002<\/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>\u3088\u304f\u898b\u308b\u3068\u3001\u3053\u308c\u3089\u306e\u7b49\u5f0f\u306f<em>\u57fa\u672c\u7684\u306a\u30d4\u30bf\u30b4\u30e9\u30b9\u4e09\u89d2\u95a2\u4fc2<\/em>\u306b\u3088\u304f\u4f3c\u3066\u3044\u307e\u3059\u3002<\/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>\u305d\u306e\u7d50\u679c\u3001\u5f0f (1) \u304a\u3088\u3073 (3) \u3092\u6e80\u305f\u3059\u9805\u304c\u5f97\u3089\u308c\u307e\u3059\u3002<\/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>\u3055\u3089\u306b\u30012 \u756a\u76ee\u306e\u65b9\u7a0b\u5f0f\u306b\u5024\u3092\u4ee3\u5165\u3059\u308b\u3068\u30012 \u3064\u306e\u89d2\u5ea6\u306e\u95a2\u4fc2\u304c\u5f97\u3089\u308c\u307e\u3059\u3002 <\/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>\u3064\u307e\u308a\u3001\u6b21\u306e 2 \u3064\u306e\u6761\u4ef6\u306e\u3044\u305a\u308c\u304b\u3092\u6e80\u305f\u3059\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/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>\u3057\u305f\u304c\u3063\u3066\u3001\u7d50\u8ad6\u3068\u3057\u3066\u3001\u76f4\u4ea4\u884c\u5217\u306f\u6b21\u306e 2 \u3064\u306e\u884c\u5217\u306e\u3044\u305a\u308c\u304b\u306e\u69cb\u9020\u3092\u6301\u3064\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002 <\/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 \u6b21\u5143\u306e\u76f4\u4ea4\u884c\u5217\u306e\u516c\u5f0f\" class=\"wp-image-3267\" width=\"623\" height=\"143\" srcset=\"\" sizes=\"auto, \"><\/figure>\n<\/div>\n<p>\u91d1<\/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>\u306f\u5b9f\u6570\u3067\u3059\u3002<\/p>\n<p>\u5b9f\u969b\u3001\u4f8b\u3068\u3057\u3066\u5024\u3092\u4ed8\u4e0e\u3059\u308b\u3068\u3001<\/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>\u6700\u521d\u306e\u69cb\u9020\u3092\u53d6\u5f97\u3059\u308b\u3068\u3001\u300c2\u00d72 \u76f4\u4ea4\u884c\u5217\u306e\u4f8b\u300d\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u76f4\u4ea4\u3067\u3042\u308b\u3053\u3068\u304c\u78ba\u8a8d\u3055\u308c\u305f\u884c\u5217\u304c\u5f97\u3089\u308c\u307e\u3059\u3002 <\/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\">\u76f4\u4ea4\u884c\u5217\u306e\u30d7\u30ed\u30d1\u30c6\u30a3<\/h2>\n<p>\u3053\u306e\u30bf\u30a4\u30d7\u306e\u30de\u30c8\u30ea\u30c3\u30af\u30b9\u306e\u7279\u5fb4\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/p>\n<ul>\n<li>\u76f4\u4ea4\u884c\u5217\u306f\u5e38\u306b\u53cd\u8ee2\u3067\u304d\u308b\u305f\u3081\u3001<a href=\"https:\/\/mathority.org\/ja\/\u7279\u7570\u884c\u5217\u307e\u305f\u306f\u7e2e\u9000\u884c\u5217\/\">\u7279\u7570\u884c\u5217<\/a>\u306b\u306a\u308b\u3053\u3068\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u3053\u306e\u610f\u5473\u3067\u3001\u76f4\u4ea4\u884c\u5217\u306e\u9006\u884c\u5217\u306f\u5225\u306e\u76f4\u4ea4\u884c\u5217\u3067\u3059\u3002<\/li>\n<\/ul>\n<ul>\n<li>\u4efb\u610f\u306e\u76f4\u4ea4\u884c\u5217\u306f\u5bfe\u89d2\u5316\u3067\u304d\u307e\u3059\u3002\u3057\u305f\u304c\u3063\u3066\u3001\u76f4\u4ea4\u884c\u5217\u306f<em>\u76f4\u4ea4\u5bfe\u89d2\u5316\u53ef\u80fd\u3067\u3042\u308b\u3068\u8a00\u3044\u307e\u3059\u3002<\/em><\/li>\n<\/ul>\n<ul>\n<li>\u3059\u3079\u3066\u306e\u56fa\u6709\u5024\u3001\u307e\u305f\u306f\u76f4\u4ea4\u884c\u5217\u306e\u56fa\u6709\u5024\u306f\u30011 \u306b\u7b49\u3057\u3044\u4fc2\u6570\u3092\u6301\u3061\u307e\u3059\u3002<\/li>\n<\/ul>\n<ul>\n<li>\u5b9f\u6570\u306e\u307f\u3067\u69cb\u6210\u3055\u308c\u308b\u76f4\u4ea4\u884c\u5217\u3082\u6b63\u898f\u884c\u5217\u3067\u3059\u3002<\/li>\n<\/ul>\n<ul>\n<li>\u8907\u7d20\u6570\u74b0\u5883\u306b\u304a\u3051\u308b\u76f4\u4ea4\u884c\u5217\u306e\u985e\u4f3c\u7269\u306f\u3001\u30e6\u30cb\u30bf\u30ea\u884c\u5217\u3067\u3059\u3002<\/li>\n<\/ul>\n<ul>\n<li>\u660e\u3089\u304b\u306b\u3001\u5358\u4f4d\u884c\u5217\u306f\u76f4\u4ea4\u884c\u5217\u3067\u3059\u3002<\/li>\n<\/ul>\n<ul>\n<li> n \u00d7 n \u6b21\u5143\u306e\u76f4\u4ea4\u884c\u5217\u306e\u96c6\u5408\u3068\u884c\u5217\u306e\u7a4d\u306e\u6f14\u7b97\u306f\u3001\u76f4\u4ea4\u7fa4\u3068\u547c\u3070\u308c\u308b\u7fa4\u3092\u5f62\u6210\u3057\u307e\u3059\u3002\u3064\u307e\u308a\u30012 \u3064\u306e\u76f4\u4ea4\u884c\u5217\u306e\u7a4d\u306f\u3001\u5225\u306e\u76f4\u4ea4\u884c\u5217\u3068\u7b49\u3057\u304f\u306a\u308a\u307e\u3059\u3002<\/li>\n<\/ul>\n<ul>\n<li>\u3055\u3089\u306b\u3001\u76f4\u4ea4\u884c\u5217\u306b\u8ee2\u7f6e\u3092\u4e57\u7b97\u3057\u305f\u7d50\u679c\u306f\u3001\u30af\u30ed\u30cd\u30c3\u30ab\u30fc \u30c7\u30eb\u30bf\u3067\u8868\u3059\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/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>\u6700\u5f8c\u306b\u3001\u76f4\u4ea4\u884c\u5217\u306e\u884c\u5217\u5f0f\u306f\u5e38\u306b +1 \u307e\u305f\u306f -1 \u3067\u3059\u3002<\/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\">\u76f4\u4ea4\u884c\u5217\u306e\u89e3\u6c7a\u6e08\u307f\u6f14\u7fd2<\/h2>\n<p>\u6b21\u306b\u3001\u76f4\u4ea4\u884c\u5217\u306e\u7df4\u7fd2\u554f\u984c\u3092\u89e3\u304d\u307e\u3059\u3002<\/p>\n<ul>\n<li>\u6b21\u306e\u6b21\u6570 3 \u306e\u6b63\u65b9\u884c\u5217\u304c\u4e0e\u3048\u3089\u308c\u305f\u5834\u5408\u3001\u6b21\u306e\u5024\u3092\u6c42\u3081\u307e\u3059\u3002\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>\u305d\u3057\u3066<\/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>\u76f4\u4ea4\u3055\u305b\u308b\u306b\u306f:<\/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>\u884c\u5217\u306e\u76f4\u4ea4\u6027\u304c\u6e80\u305f\u3055\u308c\u308b\u305f\u3081\u306b\u306f\u3001\u884c\u5217\u306e\u8ee2\u7f6e\u306b\u3088\u308b\u7a4d\u304c\u6052\u7b49\u884c\u5217\u306b\u7b49\u3057\u304f\u306a\u3051\u308c\u3070\u306a\u308a\u307e\u305b\u3093\u3002\u305d\u308c\u3067\uff1a<\/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>\u884c\u5217\u3092\u4e57\u7b97\u3057\u307e\u3059\u3002<\/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>\u3053\u306e\u4f4d\u7f6e\u306e\u8981\u7d20\u306f\u4e00\u81f4\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u305f\u3081\u3001\u884c\u5217\u306e\u5de6\u4e0a\u9685\u304b\u3089\u65b9\u7a0b\u5f0f\u3092\u53d6\u5f97\u3067\u304d\u307e\u3059\u3002\u307e\u3060\uff1a <\/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>\u65b9\u7a0b\u5f0f\u3092\u89e3\u304d\u3001\u672a\u77e5\u306e\u3082\u306e\u3092\u6392\u9664\u3057\u307e\u3059\u3002 <\/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>\u305f\u3060\u3057\u3001\u53f3\u4e0a\u9685\u306b\u3042\u308b\u3082\u306e\u306a\u3069\u3001\u6b63\u306e\u89e3\u3067\u306f\u6210\u7acb\u3057\u306a\u3044\u65b9\u7a0b\u5f0f\u3082\u3042\u308a\u307e\u3059\u3002\u3057\u305f\u304c\u3063\u3066\u3001<strong>\u5426\u5b9a\u7684\u306a\u89e3\u6c7a\u7b56\u306e\u307f\u304c\u53ef\u80fd\u3067\u3059<\/strong>\u3002<\/p>\n<p>\u4e00\u65b9\u3001\u5909\u6570\u3092\u8a08\u7b97\u3059\u308b\u306b\u306f\u3001<\/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>\u305f\u3068\u3048\u3070\u3001\u6700\u521d\u306e\u5217\u306e 2 \u884c\u76ee\u306b\u3042\u308b\u7528\u8a9e\u3092\u7167\u5408\u3067\u304d\u307e\u3059\u3002<\/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>\u306e\u5024\u3092\u7f6e\u304d\u63db\u3048\u308b\u3053\u3068\u306b\u3088\u308a\u3001<\/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>\u65b9\u7a0b\u5f0f\u3067\u306f\u6b21\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002 <\/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>\u3064\u307e\u308a\u3001\u8003\u3048\u3089\u308c\u308b\u552f\u4e00\u306e\u89e3\u6c7a\u7b56\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/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>\u3057\u305f\u304c\u3063\u3066\u3001\u3053\u308c\u3089\u306e\u5024\u306b\u5bfe\u5fdc\u3059\u308b\u76f4\u4ea4\u884c\u5217\u306f\u6b21\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/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\">\u76f4\u4ea4\u884c\u5217\u306e\u5fdc\u7528<\/h2>\n<p>\u76f4\u4ea4\u884c\u5217\u306f\u901a\u5e38\u306f\u975e\u5e38\u306b\u5358\u7d14\u306a\u5f62\u5f0f\u3067\u3042\u308b\u305f\u3081\u3001\u305d\u3046\u306f\u601d\u308f\u306a\u3044\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u304c\u3001\u6570\u5b66\u3001\u7279\u306b\u7dda\u5f62\u4ee3\u6570\u306e\u5206\u91ce\u3067\u306f\u975e\u5e38\u306b\u91cd\u8981\u3067\u3059\u3002<\/p>\n<p>\u5e7e\u4f55\u5b66\u3067\u306f\u3001\u76f4\u4ea4\u884c\u5217\u306f\u5b9f\u30d9\u30af\u30c8\u30eb\u7a7a\u9593\u3067\u306e\u7b49\u89d2\u5909\u63db (\u8ddd\u96e2\u3068\u89d2\u5ea6\u3092\u5909\u66f4\u3057\u306a\u3044) \u3092\u8868\u3059\u305f\u3081\u3001\u76f4\u4ea4\u5909\u63db\u3068\u547c\u3070\u308c\u307e\u3059\u3002\u3055\u3089\u306b\u3001\u3053\u308c\u3089\u306e\u5909\u63db\u306f\u3001\u8003\u616e\u3055\u308c\u3066\u3044\u308b\u30d9\u30af\u30c8\u30eb\u7a7a\u9593\u306e\u5185\u90e8\u540c\u578b\u5199\u50cf\u3067\u3059\u3002\u3053\u308c\u3089\u306e\u5909\u63db\u306b\u306f\u3001<strong>\u56de\u8ee2<\/strong>\u3001<strong>\u93e1\u9762\u53cd\u5c04<\/strong>\u3001<strong>\u53cd\u8ee2\u306a\u3069<\/strong>\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u6700\u5f8c\u306b\u3001\u3053\u306e\u30bf\u30a4\u30d7\u306e\u30de\u30c8\u30ea\u30c3\u30af\u30b9\u306f\u525b\u4f53\u306e\u52d5\u304d\u3092\u7814\u7a76\u3067\u304d\u308b\u305f\u3081\u3001\u7269\u7406\u5b66\u3067\u3082\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002\u305d\u3057\u3066\u3001\u305d\u308c\u3089\u306f\u7279\u5b9a\u306e\u5834\u306e\u7406\u8ad6\u306e\u5b9a\u5f0f\u5316\u306b\u3082\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u3053\u306e\u30da\u30fc\u30b8\u3067\u306f\u3001\u76f4\u4ea4\u884c\u5217\u3068\u306f\u4f55\u304b\u3001\u304a\u3088\u3073\u76f4\u4ea4\u884c\u5217\u3068\u9006\u884c\u5217\u3068\u306e\u95a2\u4fc2\u306b\u3064\u3044\u3066\u8aac\u660e\u3057\u307e\u3059\u3002\u307e\u305f\u3001\u305d\u308c\u3092\u5b8c\u5168\u306b\u7406\u89e3\u3059\u308b\u305f\u3081\u306b\u3044\u304f\u3064\u304b\u306e\u4f8b\u3082\u8868\u793a\u3055\u308c\u307e\u3059\u3002\u3055\u3089\u306b\u3001\u76f4\u4ea4\u884c\u5217\u3092\u30c1\u30a7\u30c3\u30af\u3059\u308b\u516c\u5f0f\u3082\u6559\u3048\u307e\u3059\u3002\u3053\u308c\u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u76f4\u4ea4\u884c\u5217\u3092\u3059 &hellip;<\/p>\n<p class=\"read-more\"> <a class=\"\" href=\"https:\/\/mathority.org\/ja\/%e7%9b%b4%e4%ba%a4%e8%a1%8c%e5%88%97%e3%81%ae%e4%be%8b-%e3%83%97%e3%83%ad%e3%83%91%e3%83%86%e3%82%a3-2x2-3x3\/\"> <span class=\"screen-reader-text\">\u76f4\u4ea4\u884c\u5217<\/span> \u3082\u3063\u3068\u8aad\u3080 &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":[30],"tags":[],"class_list":["post-332","post","type-post","status-publish","format-standard","hentry","category-30"],"yoast_head":"<!-- This site is optimized 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