{"id":286,"date":"2023-07-06T20:03:12","date_gmt":"2023-07-06T20:03:12","guid":{"rendered":"https:\/\/mathority.org\/ja\/%e8%a1%8c%e5%88%97%e5%bc%8f%e3%81%ae%e6%80%a7%e8%b3%aa-%e4%be%8b%e3%81%a8%e6%bc%94%e7%bf%92-2x2-3x3\/"},"modified":"2023-07-06T20:03:12","modified_gmt":"2023-07-06T20:03:12","slug":"%e8%a1%8c%e5%88%97%e5%bc%8f%e3%81%ae%e6%80%a7%e8%b3%aa-%e4%be%8b%e3%81%a8%e6%bc%94%e7%bf%92-2x2-3x3","status":"publish","type":"post","link":"https:\/\/mathority.org\/ja\/%e8%a1%8c%e5%88%97%e5%bc%8f%e3%81%ae%e6%80%a7%e8%b3%aa-%e4%be%8b%e3%81%a8%e6%bc%94%e7%bf%92-2x2-3x3\/","title":{"rendered":"\u6c7a\u5b9a\u5b50\u306e\u30d7\u30ed\u30d1\u30c6\u30a3"},"content":{"rendered":"<p>\u3053\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u306f\u3001<strong>\u884c\u5217\u5f0f\u306e\u3059\u3079\u3066\u306e\u6027\u8cea\u304c<\/strong>\u4f55\u3067\u3042\u308b\u304b\u3092\u898b\u3066\u3044\u304d\u307e\u3059\u3002\u307e\u305f\u3001\u5404\u30d7\u30ed\u30d1\u30c6\u30a3\u3092\u5b8c\u5168\u306b\u7406\u89e3\u3067\u304d\u308b\u3088\u3046\u306b\u3001\u4f8b\u3092\u4f7f\u7528\u3057\u3066\u8aac\u660e\u3057\u307e\u3059\u3002\u3055\u3089\u306b\u3001\u6c7a\u5b9a\u5b50\u306e\u30d7\u30ed\u30d1\u30c6\u30a3\u306b\u95a2\u9023\u3059\u308b\u6f14\u7fd2\u3082\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u4ee5\u4e0b\u3067\u306f\u3001\u884c\u5217\u5f0f\u306e\u5404\u30d7\u30ed\u30d1\u30c6\u30a3\u3092 1 \u3064\u305a\u3064\u8aac\u660e\u3057\u307e\u3059\u304c\u3001\u5fc5\u8981\u306b\u5fdc\u3058\u3066\u3001\u4e0b\u306e<strong>\u6982\u8981\u8868<\/strong>\u306b\u76f4\u63a5\u30b9\u30ad\u30c3\u30d7\u3067\u304d\u307e\u3059\u3002 \ud83d\ude09<\/p>\n<h2 class=\"wp-block-heading\">\u6027\u8cea 1: \u8ee2\u7f6e\u884c\u5217\u306e\u884c\u5217\u5f0f<\/h2>\n<div class=\"adsb30\" style=\" margin:12px; text-align:center\">\n<div id=\"ezoic-pub-ad-placeholder-109\"><\/div>\n<\/div>\n<div style=\"background-color:#dff6ff;padding-top: 20px; padding-bottom: 0.5px; padding-right: 40px; padding-left: 30px\" class=\"has-background\">\n<p align=\"LEFT\">\u884c\u5217\u306e\u884c\u5217\u5f0f\u306f\u3001\u305d\u306e\u8ee2\u7f6e\u884c\u5217\u306e\u884c\u5217\u5f0f\u3068\u540c\u7b49\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-2f3228b0db84cb6cff32c1157107dfd7_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\lvert A \\rvert = \\lvert A^t \\rvert\" title=\"Rendered by QuickLaTeX.com\" height=\"20\" width=\"72\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<\/div>\n<h3 style=\"color:#00B0FF\">\u4f8b\uff1a<\/h3>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-7e39b73d52e436c660c2c9f2eeed39f6_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\lvert A \\rvert =  \\begin{vmatrix} 2 &amp; 3 \\\\[1.1ex] 1 &amp; 5  \\end{vmatrix} =  2 \\cdot 5 - 1 \\cdot 3 = 10 - 3 = \\bm{7}\" title=\"Rendered by QuickLaTeX.com\" height=\"54\" width=\"301\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<p>\u6b21\u306b\u30012&#215;2 \u884c\u5217\u3092\u8ee2\u7f6e\u3057\u3001\u884c\u5217\u5f0f\u3092\u89e3\u304d\u307e\u3059\u3002\u524d\u3068\u540c\u3058\u7d50\u679c\u304c\u5f97\u3089\u308c\u308b\u3053\u3068\u306b\u6ce8\u76ee\u3057\u3066\u304f\u3060\u3055\u3044\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-fc16abe425fb139cb3a6b7ba7e3b1915_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\lvert A^t \\rvert =  \\begin{vmatrix} 2 &amp; 1 \\\\[1.1ex] 3 &amp; 5  \\end{vmatrix} =  2 \\cdot 5 - 3 \\cdot 1 = 10 - 3 = \\bm{7}\" title=\"Rendered by QuickLaTeX.com\" height=\"54\" width=\"307\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<h2 class=\"wp-block-heading\">\u7279\u6027 2: \u884c\u307e\u305f\u306f\u5217\u304c\u30bc\u30ed\u3067\u57cb\u3081\u3089\u308c\u305f\u884c\u5217\u5f0f<\/h2>\n<div style=\"background-color:#dff6ff;padding-top: 20px; padding-bottom: 0.5px; padding-right: 40px; padding-left: 30px\" class=\"has-background\">\n<p align=\"LEFT\">\u884c\u5217\u5f0f\u306b\u30bc\u30ed\u3067\u57cb\u3081\u3089\u308c\u305f\u884c\u307e\u305f\u306f\u5217\u304c\u3042\u308b\u5834\u5408\u3001\u884c\u5217\u5f0f\u306f 0 \u3092\u8fd4\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-54df933d2167697d926c25dd9554d90a_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle \\begin{vmatrix} a_{11} &amp; 0 &amp; a_{13} \\\\[1.1ex] a_{21} &amp; 0 &amp; a_{23} \\\\[1.1ex] a_{31} &amp; 0 &amp; a_{33}\\end{vmatrix}=0\" title=\"Rendered by QuickLaTeX.com\" height=\"86\" width=\"132\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<\/div>\n<h3 style=\"color:#00B0FF\">\u4f8b\uff1a<\/h3>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-95bc2d762871764f41176acc052a633c_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\begin{vmatrix} 5 &amp; 6 &amp; 2 \\\\[1.1ex] 0 &amp; 0 &amp; 0 \\\\[1.1ex] -3 &amp; 1 &amp; 4 \\end{vmatrix}   =  \\bm{0} \\qquad \\qquad \\begin{vmatrix} 1 &amp; -5 &amp; 0 \\\\[1.1ex] 6 &amp; 2 &amp; 0 \\\\[1.1ex] 1 &amp; 3 &amp; 0 \\end{vmatrix} = \\bm{0}\" title=\"Rendered by QuickLaTeX.com\" height=\"86\" width=\"313\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<p>\u3053\u308c\u3089\u306e\u4f8b\u3067\u306f\u4e21\u65b9\u3068\u3082\u3001\u884c\u5217\u5f0f\u306f 0 \u3068\u8a55\u4fa1\u3055\u308c\u307e\u3059\u3002\u6700\u521d\u306e\u884c\u5217\u5f0f\u306e 2 \u884c\u76ee\u306f\u3059\u3079\u3066 0 \u3067\u3042\u308a\u30012 \u756a\u76ee\u306e\u884c\u5217\u5f0f\u306e 3 \u5217\u76ee\u3082\u3059\u3079\u3066 0 \u3067\u3042\u308b\u305f\u3081\u3067\u3059\u3002<\/p>\n<h2 class=\"wp-block-heading\">\u7279\u6027 3: 2 \u3064\u306e\u7b49\u3057\u3044\u884c\u307e\u305f\u306f\u5217\u3092\u6301\u3064\u884c\u5217\u5f0f<\/h2>\n<div class=\"adsb30\" style=\" margin:12px; text-align:center\">\n<div id=\"ezoic-pub-ad-placeholder-110\"><\/div>\n<\/div>\n<p class=\"has-background\" style=\"background-color:#dff6ff\">\u884c\u5217\u5f0f\u306b 2 \u3064\u306e\u7b49\u3057\u3044\u884c\u307e\u305f\u306f\u8907\u6570\u306e\u884c\u307e\u305f\u306f 2 \u3064\u306e\u5217\u304c\u3042\u308b\u5834\u5408\u3001\u884c\u5217\u5f0f\u306f\u30bc\u30ed (0) \u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\u3057\u305f\u304c\u3063\u3066\u3001\u884c\u307e\u305f\u306f\u5217\u9593\u306b\u7dda\u5f62\u7d50\u5408\u304c\u3042\u308b\u5834\u5408\u3001\u3064\u307e\u308a\u7dda\u5f62\u5f93\u5c5e\u3057\u3066\u3044\u308b\u5834\u5408\u3001\u884c\u5217\u5f0f\u306f 0 \u3092\u8fd4\u3057\u307e\u3059\u3002<\/p>\n<h3 style=\"color:#00B0FF\">\u4f8b\uff1a<\/h3>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-c31b59570d4f89e8c7e7aa9f922977c5_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\begin{vmatrix} 3 &amp; 4 &amp; 4 \\\\[1.1ex] -1 &amp; 5 &amp; 5 \\\\[1.1ex] 6 &amp; 2 &amp; 2 \\end{vmatrix} =  0\" title=\"Rendered by QuickLaTeX.com\" height=\"86\" width=\"117\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<p>\u3053\u306e\u5834\u5408\u3001\u5217 2 \u3068\u5217 3 \u304c\u7b49\u3057\u3044\u305f\u3081\u3001\u884c\u5217\u5f0f\u306f 0 \u3092\u8fd4\u3057\u307e\u3059\u3002<\/p>\n<h2 class=\"wp-block-heading\">\u30d7\u30ed\u30d1\u30c6\u30a3 4: \u884c\u5217\u5f0f\u306e\u884c\u307e\u305f\u306f\u5217\u3092\u5909\u66f4\u3059\u308b<\/h2>\n<div style=\"background-color:#dff6ff;padding-top: 20px; padding-bottom: 0.5px; padding-right: 40px; padding-left: 30px\" class=\"has-background\">\n<p align=\"LEFT\"> 2 \u3064\u306e\u884c\u307e\u305f\u306f 2 \u3064\u306e\u5217\u304c\u76f8\u4e92\u306b\u5909\u66f4\u3055\u308c\u308b\u3068\u3001\u884c\u5217\u5f0f\u306f\u540c\u3058\u7d50\u679c\u3092\u8fd4\u3057\u307e\u3059\u304c\u3001\u7b26\u53f7\u306f\u7570\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-de79fc53e94c9a30d8a271d42d4e3494_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle  \\begin{vmatrix} a &amp; b &amp; c \\\\[1.1ex] d &amp; e &amp; f \\\\[1.1ex] g &amp; h &amp; i \\end{vmatrix}= - \\begin{vmatrix} a &amp; c &amp; b \\\\[1.1ex] d &amp; f &amp; e \\\\[1.1ex] g &amp; i &amp; h \\end{vmatrix}\" title=\"Rendered by QuickLaTeX.com\" height=\"86\" width=\"185\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<\/div>\n<h3 style=\"color:#00B0FF\">\u4f8b\uff1a<\/h3>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-c2e4806318fa67998b339383a9dc9ea5_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\begin{vmatrix} 3 &amp; 2 &amp; -4 \\\\[1.1ex] 1 &amp; 5 &amp; 6 \\\\[1.1ex] 1 &amp; 0 &amp; -3 \\end{vmatrix} = \\displaystyle -45 +12+0+20-0+6=  \\bm{-7}\" title=\"Rendered by QuickLaTeX.com\" height=\"86\" width=\"357\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<p>\u3053\u3053\u3067\u3001\u5217 2 \u3068\u5217 3 \u306e\u9806\u5e8f\u3092\u76f8\u4e92\u306b\u5909\u66f4\u3057\u307e\u3059\u3002\u7d50\u679c\u306f\u540c\u3058\u3067\u3059\u304c\u3001\u7b26\u53f7\u304c\u7570\u306a\u308b\u3053\u3068\u306b\u6ce8\u610f\u3057\u3066\u304f\u3060\u3055\u3044\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-4a4de8b8cf37df2c3cce69d16a19a578_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\begin{vmatrix} 3 &amp; -4 &amp; 2 \\\\[1.1ex] 1 &amp; 6 &amp; 5 \\\\[1.1ex] 1 &amp; -3 &amp; 0 \\end{vmatrix}   = \\displaystyle 0-20-6-12+45-0=  \\bm{+7}\" title=\"Rendered by QuickLaTeX.com\" height=\"86\" width=\"343\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<h2 class=\"wp-block-heading\">\u30d7\u30ed\u30d1\u30c6\u30a3 5: \u884c\u5217\u5f0f\u306e\u884c\u306b\u30b9\u30ab\u30e9\u30fc\u3092\u4e57\u7b97\u3059\u308b<\/h2>\n<div class=\"adsb30\" style=\" margin:px; text-align:\"><\/div>\n<div style=\"background-color:#dff6ff;padding-top: 20px; padding-bottom: 0.5px; padding-right: 40px; padding-left: 30px\" class=\"has-background\">\n<p align=\"LEFT\">\u884c\u307e\u305f\u306f\u5217\u5168\u4f53\u306e\u3059\u3079\u3066\u306e\u8981\u7d20\u306b\u5b9f\u6570\u3092\u4e57\u7b97\u3059\u308b\u3053\u3068\u306f\u3001\u884c\u5217\u5f0f\u306e\u7d50\u679c\u306b\u305d\u306e\u6570\u5024\u3092\u4e57\u7b97\u3059\u308b\u3053\u3068\u3068\u540c\u3058\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-06cf5f62a3d703b43bb68b319839df26_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle \\begin{vmatrix} k \\cdot a_{11} &amp;  k \\cdot a_{12} &amp; k \\cdot a_{13} \\\\[1.1ex] a_{21} &amp;  a_{22} &amp; a_{23} \\\\[1.1ex] a_{31} &amp;  a_{32} &amp; a_{33} \\end{vmatrix} =k \\cdot \\begin{vmatrix} a_{11} &amp; a_{12} &amp; a_{13} \\\\[1.1ex] a_{21} &amp;  a_{22} &amp; a_{23} \\\\[1.1ex] a_{31} &amp;  a_{32} &amp; a_{33} \\end{vmatrix}\" title=\"Rendered by QuickLaTeX.com\" height=\"86\" width=\"342\" 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-a7b38fe06dab0bbdbfef384b3e403fed_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle  \\begin{vmatrix} k \\cdot a_{11} &amp; a_{12} &amp; a_{13} \\\\[1.1ex] k \\cdot a_{21} &amp;  a_{22} &amp; a_{23} \\\\[1.1ex] k \\cdot a_{31} &amp;  a_{32} &amp; a_{33} \\end{vmatrix} =k \\cdot \\begin{vmatrix} a_{11} &amp; a_{12} &amp; a_{13} \\\\[1.1ex] a_{21} &amp;  a_{22} &amp; a_{23} \\\\[1.1ex] a_{31} &amp;  a_{32} &amp; a_{33} \\end{vmatrix}\" title=\"Rendered by QuickLaTeX.com\" height=\"86\" width=\"297\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<\/div>\n<h3 style=\"color:#00B0FF\">\u4f8b\uff1a<\/h3>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-92b404bb7ad8bbdd59c8c54c1619c37d_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle   \\begin{vmatrix} 2 &amp; 3 \\\\[1.1ex] 1 &amp; 4  \\end{vmatrix}   = 8-3= \\bm{5}\" title=\"Rendered by QuickLaTeX.com\" height=\"54\" width=\"138\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<p>\u6b21\u306b\u3001\u540c\u3058\u884c\u5217\u5f0f\u3092\u4f7f\u7528\u3057\u3066\u3001\u884c\u5168\u4f53\u306b 2 \u3092\u639b\u3051\u307e\u3059\u3002\u7d50\u679c\u306f\u3001\u524d\u306e\u884c\u5217\u5f0f\u306b 2\u3001\u3064\u307e\u308a 10 \u3092\u639b\u3051\u305f\u3082\u306e\u306b\u306a\u308b\u3053\u3068\u304c\u308f\u304b\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-57ae1ba33c0d108f08ac9d0b5cb4a81b_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle  \\begin{vmatrix} 2 \\cdot 2 &amp; 2 \\cdot 3 \\\\[1.1ex] 1 &amp; 4  \\end{vmatrix}   =  \\begin{vmatrix} 4 &amp; 6 \\\\[1.1ex] 1 &amp; 4  \\end{vmatrix} = 16-6 =\\bm{10}\" title=\"Rendered by QuickLaTeX.com\" height=\"54\" width=\"270\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<h2 class=\"wp-block-heading\">\u7279\u6027 6: \u884c\u5217\u7a4d\u306e\u6c7a\u5b9a\u56e0\u5b50<\/h2>\n<div class=\"adsb30\" style=\" margin:12px; text-align:center\">\n<div id=\"ezoic-pub-ad-placeholder-111\"><\/div>\n<\/div>\n<div style=\"background-color:#dff6ff;padding-top: 20px; padding-bottom: 0.5px; padding-right: 40px; padding-left: 30px\" class=\"has-background\">\n<p align=\"LEFT\"> 2 \u3064\u306e\u884c\u5217\u306e\u7a4d\u306e\u884c\u5217\u5f0f\u306f\u3001\u5404\u884c\u5217\u306e\u500b\u5225\u306e\u884c\u5217\u5f0f\u306e\u7a4d\u306b\u7b49\u3057\u304f\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-066ee1431d90a4c2cb6febe8a381cc69_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle  \\lvert A \\cdot B \\rvert = \\lvert A \\rvert \\cdot \\lvert B \\rvert\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"130\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<\/div>\n<h3 style=\"color:#00B0FF\">\u4f8b\uff1a<\/h3>\n<p>\u884c\u5217\u5f0f\u306e\u3053\u306e\u6027\u8cea\u3092\u5b9f\u8a3c\u3059\u308b\u305f\u3081\u306b\u3001\u6b21\u306e 2 \u3064\u306e\u884c\u5217\u306e\u4e57\u7b97\u306e\u884c\u5217\u5f0f\u3092 2 \u3064\u306e\u53ef\u80fd\u306a\u65b9\u6cd5\u3067\u8a08\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-38de0ca99ad15f40bd94f653cffacf8d_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle A= \\begin{pmatrix} 1 &amp; 3 \\\\[1.1ex] 2 &amp; 5 \\end{pmatrix}\\quad B=\\begin{pmatrix} 4 &amp; 2 \\\\[1.1ex] 1 &amp; -1 \\end{pmatrix}\" title=\"Rendered by QuickLaTeX.com\" height=\"54\" width=\"229\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<p>\u307e\u305a 2 \u3064\u306e\u884c\u5217\u3092\u4e57\u7b97\u3057\u3001\u6b21\u306b\u7d50\u679c\u306e\u884c\u5217\u306e\u884c\u5217\u5f0f\u3092\u8a08\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-2ad18d1637b581038b7866030d6ac9a0_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle  \\left| A \\cdot B \\right| =\\left| \\begin{pmatrix} 1 &amp; 3 \\\\[1.1ex] 2 &amp; 5  \\end{pmatrix} \\cdot \\begin{pmatrix} 4 &amp; 2 \\\\[1.1ex] 1 &amp; -1  \\end{pmatrix}\\right|  = \\left| \\begin{pmatrix} 7 &amp; -1 \\\\[1.1ex] 13 &amp; -1  \\end{pmatrix} \\right|  = -7 - (-13) = \\bm{6}\" title=\"Rendered by QuickLaTeX.com\" height=\"55\" width=\"500\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<p>\u3053\u3053\u3067\u3001\u5404\u884c\u5217\u306e\u884c\u5217\u5f0f\u3092\u500b\u5225\u306b\u8a08\u7b97\u3057\u3001\u7d50\u679c\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-5f7c97d5a832d3985bf1d5e9d4d44401_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle \\lvert A \\rvert \\cdot \\lvert B \\rvert =  \\left| \\begin{pmatrix} 1 &amp; 3 \\\\[1.1ex] 2 &amp; 5  \\end{pmatrix} \\right| \\cdot \\left| \\begin{pmatrix} 4 &amp; 2 \\\\[1.1ex] 1 &amp; -1  \\end{pmatrix}\\right| = -1\\cdot (-6)= \\bm{6}\" title=\"Rendered by QuickLaTeX.com\" height=\"55\" width=\"384\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<p>\u3054\u89a7\u306e\u3068\u304a\u308a\u3001\u6700\u521d\u306b\u884c\u5217\u306e\u7a4d\u3092\u5b9f\u884c\u3057\u3066\u304b\u3089\u884c\u5217\u5f0f\u3092\u5b9f\u884c\u3059\u308b\u3068\u3001\u6700\u521d\u306b\u5404\u884c\u5217\u306e\u884c\u5217\u5f0f\u3092\u5b9f\u884c\u3057\u3066\u304b\u3089\u305d\u306e\u7d50\u679c\u3092\u4e57\u7b97\u3059\u308b\u306e\u3068\u540c\u3058\u7d50\u679c\u304c\u5f97\u3089\u308c\u307e\u3059\u3002<\/p>\n<p>\u4e00\u65b9\u3001\u3053\u306e\u6761\u4ef6\u306f\u52a0\u7b97\u304a\u3088\u3073\u6e1b\u7b97\u6f14\u7b97\u306b\u306f\u5f53\u3066\u306f\u307e\u308a\u307e\u305b\u3093\u3002\u3064\u307e\u308a\u30012 \u3064\u306e\u884c\u5217\u306e\u52a0\u7b97 (\u307e\u305f\u306f\u6e1b\u7b97) \u306e\u884c\u5217\u5f0f\u306f\u3001\u884c\u5217\u5f0f\u306e\u52a0\u7b97 (\u307e\u305f\u306f\u6e1b\u7b97) \u3068\u540c\u3058\u7d50\u679c\u3092\u4e0e\u3048\u307e\u305b\u3093\u3002 2 \u3064\u306e\u884c\u5217\u3092\u5225\u3005\u306b\u51e6\u7406\u3057\u307e\u3059\u3002 <\/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\">\u6027\u8cea 7: \u9006\u884c\u5217\u306e\u884c\u5217\u5f0f<\/h2>\n<div style=\"background-color:#dff6ff;padding-top: 20px; padding-bottom: 0.5px; padding-right: 40px; padding-left: 30px\" class=\"has-background\">\n<p align=\"LEFT\">\u884c\u5217\u304c\u53ef\u9006\u3067\u3042\u308b\u5834\u5408\u3001\u305d\u306e\u9006\u884c\u5217\u306e\u884c\u5217\u5f0f\u306f\u5143\u306e\u884c\u5217\u306e\u884c\u5217\u5f0f\u306e\u9006\u884c\u5217\u306b\u5bfe\u5fdc\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-460186cec7a5d86981bd5a14e3b1dcf0_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle  \\begin{vmatrix} A^{-1} \\end{vmatrix} = \\cfrac{1}{\\lvert A \\rvert}\" title=\"Rendered by QuickLaTeX.com\" height=\"43\" width=\"91\" style=\"vertical-align: -17px;\"><\/p>\n<\/p>\n<\/div>\n<h3 style=\"color:#00B0FF\">\u4f8b\uff1a<\/h3>\n<p>\u6700\u521d\u306b\u9006\u884c\u5217\u3092\u8a08\u7b97\u3057\u3001\u6b21\u306b\u305d\u306e\u884c\u5217\u5f0f\u3092\u89e3\u304f\u3053\u3068\u306b\u3088\u3063\u3066\u3001\u3053\u306e\u7279\u6027\u3092\u691c\u8a3c\u3057\u307e\u3059\u3002\u7d50\u679c\u306f\u3001\u5143\u306e\u884c\u5217\u306e\u884c\u5217\u5f0f\u3092\u898b\u3064\u3051\u3066\u305d\u308c\u3092\u53cd\u8ee2\u3059\u308b\u3053\u3068\u3068\u540c\u3058\u3067\u3042\u308b\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3059\u3002<\/p>\n<p>\u3057\u305f\u304c\u3063\u3066\u3001\u6b21\u306e\u884c\u5217\u3092\u9006\u884c\u5217\u306b\u3057\u3066\u3001\u305d\u306e\u884c\u5217\u5f0f\u3092\u8a08\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-2c77c10006d35ebc5273553fb84356e3_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle A= \\begin{pmatrix} 4 &amp; 2 \\\\[1.1ex] 7 &amp; 4 \\end{pmatrix}\" title=\"Rendered by QuickLaTeX.com\" height=\"54\" width=\"95\" 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-8a9315a8add365cd5f077c52476a827d_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle A^{-1}= \\begin{pmatrix} 2 &amp; -1 \\\\[1.1ex] -\\frac{7}{2} &amp; 2 \\end{pmatrix}\" title=\"Rendered by QuickLaTeX.com\" height=\"54\" width=\"143\" 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-a10c873ff6c101cd2b239388393c268b_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle \\begin{vmatrix}A^{-1} \\end{vmatrix}= \\begin{vmatrix} 2 &amp; -1 \\\\[1.1ex] -\\frac{7}{2} &amp; 2 \\end{vmatrix} = 4-\\cfrac{7}{2} =\\cfrac{8}{2}-\\cfrac{7}{2} = \\cfrac{\\bm{1}}{\\bm{2}}\" title=\"Rendered by QuickLaTeX.com\" height=\"54\" width=\"307\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<p>\u305d\u3057\u3066\u4eca\u3001\u5143\u306e\u884c\u5217\u306e\u884c\u5217\u5f0f\u3092\u89e3\u304d\u3001\u305d\u306e\u9006\u884c\u5217\u3092\u8a08\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-850e5404f5352782327918caab3e1440_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle \\begin{vmatrix}A\\end{vmatrix}= \\begin{pmatrix} 4 &amp; 2 \\\\[1.1ex] 7 &amp; 4 \\end{pmatrix}=16-14=2\" title=\"Rendered by QuickLaTeX.com\" height=\"54\" width=\"221\" 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-427c70eab8ecba40b6dcde2a6e03abd2_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle \\begin{vmatrix}A^{-1}\\end{vmatrix}= \\cfrac{\\bm{1}}{\\bm{2}}\" title=\"Rendered by QuickLaTeX.com\" height=\"38\" width=\"76\" style=\"vertical-align: -12px;\"><\/p>\n<\/p>\n<p>\u3054\u89a7\u306e\u3068\u304a\u308a\u3001\u4e21\u65b9\u306e\u64cd\u4f5c\u306e\u7d50\u679c\u306f\u540c\u3058\u3067\u3059\u3002\u3057\u305f\u304c\u3063\u3066\u3001\u305d\u306e\u6027\u8cea\u306f\u8a3c\u660e\u3055\u308c\u307e\u3059\u3002<\/p>\n<h2 class=\"wp-block-heading\">\u30d7\u30ed\u30d1\u30c6\u30a3 8: \u6c7a\u5b9a\u5b50\u306e\u884c\u3092\u7f6e\u63db\u3059\u308b<\/h2>\n<p class=\"has-background\" style=\"background-color:#dff6ff\">\u884c\u5217\u5f0f\u306e\u884c\u306f\u3001\u540c\u3058\u884c\u306b\u6570\u5024\u3092\u4e57\u7b97\u3057\u305f\u5225\u306e\u884c\u3092\u52a0\u7b97 (\u307e\u305f\u306f\u6e1b\u7b97) \u3059\u308b\u3053\u3068\u306b\u3088\u3063\u3066\u7f6e\u304d\u63db\u3048\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<h3 style=\"color:#00B0FF\">\u4f8b\uff1a<\/h3>\n<p>\u6b21\u306e\u4f8b\u3067\u306f\u3001\u3053\u306e\u30d7\u30ed\u30d1\u30c6\u30a3\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002\u307e\u305a\u884c\u5217\u5f0f\u3092\u8a08\u7b97\u3057\u3001\u6b21\u306b\u884c\u5217\u5f0f\u306e\u884c\u3092\u6f14\u7b97\u3057\u3066\u305d\u306e\u7d50\u679c\u3092\u518d\u8a08\u7b97\u3057\u307e\u3059\u3002\u3069\u3061\u3089\u306e\u5834\u5408\u3067\u3082\u540c\u3058\u7d50\u679c\u304c\u5f97\u3089\u308c\u308b\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3059\u3002<\/p>\n<p>\u305d\u3053\u3067\u3001\u307e\u305a\u3001Sarrus \u30eb\u30fc\u30eb\u3092\u4f7f\u7528\u3057\u3066 3&#215;3 \u884c\u5217\u5f0f\u3092\u8a08\u7b97\u3057\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-4ccd76fc3a2b7cd7afc7d8f9de8ffde1_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\begin{vmatrix} 2 &amp; 1 &amp; -1 \\\\[1.1ex] 3 &amp; 0 &amp; 1 \\\\[1.1ex] 0 &amp; -3 &amp; 6 \\end{vmatrix} \\displaystyle=0+0+9-0+6-18 =  \\bm{-3}\" title=\"Rendered by QuickLaTeX.com\" height=\"86\" width=\"338\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<p>\u6b21\u306b\u3001 <strong>2 \u884c\u76ee\u306b\u30012 \u3092\u4e57\u7b97\u3057\u305f\u6700\u521d\u306e\u884c\u3092\u8ffd\u52a0\u3057\u307e\u3059\u3002<\/strong><\/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-4bc2e6bd78446fb68f29b4a5503a6828_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle \\begin{vmatrix} 2 &amp; 1 &amp; -1 \\\\[1.1ex] 3 &amp; 0 &amp; 1 \\\\[1.1ex] 0 &amp; -3 &amp; 6 \\end{vmatrix} \\begin{matrix} \\\\[1.1ex] \\xrightarrow{f_2 + 2f_1}  \\\\[1.1ex] \\  \\end{matrix} \\begin{vmatrix} 2 &amp; 1 &amp; -1 \\\\[1.1ex] 7 &amp; 2 &amp; -1 \\\\[1.1ex] 0 &amp; -3 &amp; 6 \\end{vmatrix}\" title=\"Rendered by QuickLaTeX.com\" height=\"86\" width=\"254\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<p>\u305d\u3057\u3066\u3001\u884c\u306e 1 \u3064\u3092\u5909\u63db\u3057\u305f\u5f8c\u3001\u884c\u5217\u5f0f\u3092\u89e3\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-045eb6f32420fbbf538a9e0a540ce119_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle \\begin{vmatrix} 2 &amp; 1 &amp; -1 \\\\[1.1ex] 7 &amp; 2 &amp; -1 \\\\[1.1ex] 0 &amp; -3 &amp; 6 \\end{vmatrix} = 24+0+21-0-6-42=\\bm{-3}\" title=\"Rendered by QuickLaTeX.com\" height=\"86\" width=\"355\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-left\">\u3069\u3061\u3089\u306e\u5834\u5408\u3082\u7d50\u679c\u306f -3 \u3067\u3057\u305f\u3002\u3057\u305f\u304c\u3063\u3066\u3001\u884c\u304c\u540c\u3058\u884c\u3068\u5225\u306e\u884c\u306e\u5408\u8a08\u306b\u6570\u5024\u3092\u4e57\u3058\u305f\u3082\u306e\u306b\u7f6e\u304d\u63db\u3048\u3089\u308c\u3066\u3082\u3001\u884c\u5217\u5f0f\u306e\u7d50\u679c\u306f\u5909\u308f\u3089\u306a\u3044\u3053\u3068\u304c\u793a\u3055\u308c\u3066\u3044\u307e\u3059\u3002 <\/p>\n<div class=\"adsb30\" style=\" margin:12px; text-align:center\">\n<div id=\"ezoic-pub-ad-placeholder-119\"><\/div>\n<\/div>\n<h2 class=\"wp-block-heading\">\u6027\u8cea 9: \u4e09\u89d2\u884c\u5217\u306e\u884c\u5217\u5f0f<\/h2>\n<p class=\"has-background\" style=\"background-color:#dff6ff\">\u4e09\u89d2\u884c\u5217\u306e\u884c\u5217\u5f0f\u306f\u3001\u305d\u306e\u4e3b\u5bfe\u89d2\u8981\u7d20\u306e\u7a4d\u3067\u3059\u3002<\/p>\n<h3 style=\"color:#00B0FF\">\u4f8b\uff1a<\/h3>\n<p>\u4f8b\u3068\u3057\u3066\u3001\u6b21\u306e\u4e09\u89d2\u884c\u5217\u306e\u884c\u5217\u5f0f\u3092\u89e3\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-40ebfa5f9f06e63ad1325d9331a57bde_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\begin{vmatrix} 2 &amp; 3 &amp; 5 \\\\[1.1ex] 0 &amp; -1 &amp; 7 \\\\[1.1ex] 0 &amp; 0 &amp; 4 \\end{vmatrix} \\displaystyle= 2 \\cdot (-1) \\cdot 4 =  \\bm{-8}\" title=\"Rendered by QuickLaTeX.com\" height=\"86\" width=\"234\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<h2 class=\"wp-block-heading\">\u6027\u8cea 10: \u5bfe\u89d2\u884c\u5217\u306e\u884c\u5217\u5f0f<\/h2>\n<p class=\"has-background\" style=\"background-color:#dff6ff\">\u5bfe\u89d2\u884c\u5217\u306e\u884c\u5217\u5f0f\u306f\u3001\u4e3b\u5bfe\u89d2\u8981\u7d20\u306e\u4e57\u7b97\u306b\u7b49\u3057\u3044\u3002<\/p>\n<h3 style=\"color:#00B0FF\">\u4f8b\uff1a<\/h3>\n<p>\u4f8b\u3068\u3057\u3066\u3001\u6b21\u306e\u5bfe\u89d2\u884c\u5217\u306e\u884c\u5217\u5f0f\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-56e1b3093685a1af729310752b03dfc9_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\begin{vmatrix}5 &amp; 0 &amp; 0 \\\\[1.1ex] 0 &amp; 3 &amp; 0 \\\\[1.1ex] 0 &amp; 0 &amp; -2 \\end{vmatrix} \\displaystyle= 5 \\cdot 3 \\cdot (-2) =  \\bm{-30}\" title=\"Rendered by QuickLaTeX.com\" height=\"86\" width=\"243\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<h2 class=\"wp-block-heading\">\u884c\u5217\u5f0f\u306e\u6027\u8cea\u306e\u6982\u8981\u8868<\/h2>\n<div class=\"adsb30\" style=\" margin:12px; text-align:center\">\n<div id=\"ezoic-pub-ad-placeholder-116\"><\/div>\n<\/div>\n<p>\u8aac\u660e\u3057\u305f\u884c\u5217\u5f0f\u306e\u7279\u6027\u306f\u3001\u6b21\u306e\u8868\u306b\u8981\u7d04\u3067\u304d\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\/proprietes-des-determinants.webp\" alt=\"\u884c\u5217\u5f0f\u306e\u6027\u8cea\" class=\"wp-image-3447\" width=\"774\" height=\"669\" srcset=\"\" sizes=\"auto, \"><\/figure>\n<\/div>\n<h2 class=\"wp-block-heading\">\u884c\u5217\u5f0f\u306e\u7279\u6027\u3092\u4f7f\u3063\u305f\u6f14\u7fd2\u554f\u984c\u3092\u89e3\u304f<\/h2>\n<h3 class=\"wp-block-heading\">\u6f14\u7fd2 1<\/h3>\n<p>\u6b21\u306e\u884c\u5217\u5f0f\u3092\u89e3\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-97dfc1ebfc5db73750870911108bd447_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle \\begin{vmatrix} 3 &amp; 1 &amp; 0 \\\\[1.1ex] 4 &amp; 2 &amp; 0 \\\\[1.1ex] -1 &amp; 6 &amp; 0 \\end{vmatrix}\" title=\"Rendered by QuickLaTeX.com\" height=\"86\" width=\"81\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<div class=\"wp-block-otfm-box-spoiler-start otfm-sp__wrapper otfm-sp__box js-otfm-sp-box__closed otfm-sp__E3F2FD boto_ver_solucion\" role=\"button\" tabindex=\"0\" aria-expanded=\"false\" data-otfm-spc=\"#E3F2FD\" style=\"text-align:center\">\n<div class=\"otfm-sp__title\"><strong>\u89e3\u6c7a\u7b56\u3092\u53c2\u7167<\/strong><\/div>\n<\/div>\n<p class=\"has-text-align-left\">\u884c\u5217\u5f0f\u306e\u884c\u307e\u305f\u306f\u5217\u304c\u30bc\u30ed\u3067\u57cb\u3081\u3089\u308c\u3066\u3044\u308b\u5834\u5408\u3001\u884c\u5217\u5f0f\u306f 0 \u3092\u8fd4\u3057\u307e\u3059 (\u30d7\u30ed\u30d1\u30c6\u30a3 2)\u3002\u3057\u305f\u304c\u3063\u3066\u3001 <strong>3 \u5217\u76ee\u306f\u30bc\u30ed\u3067\u57cb\u3081\u3089\u308c\u308b\u305f\u3081\u3001\u884c\u5217\u5f0f\u306e\u7d50\u679c\u306f 0 \u306b\u306a\u308a\u307e\u3059\u3002<\/strong><\/p>\n<div class=\"wp-block-otfm-box-spoiler-end otfm-sp_end\"><\/div>\n<h3 class=\"wp-block-heading\">\u6f14\u7fd2 2<\/h3>\n<p>\u6b21\u306e\u884c\u5217\u5f0f\u3092\u89e3\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-bdb315ba588fe5fdfb03c7fea2857b16_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle \\begin{vmatrix} 4 &amp; 2 &amp; -3 &amp; 5 \\\\[1.1ex] 1 &amp; 5 &amp; 3 &amp; 2 \\\\[1.1ex]4 &amp; 2 &amp; -3 &amp; 5 \\\\[1.1ex] -2 &amp; 0 &amp; 4 &amp; 3 \\end{vmatrix}\" title=\"Rendered by QuickLaTeX.com\" height=\"108\" width=\"119\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<div class=\"wp-block-otfm-box-spoiler-start otfm-sp__wrapper otfm-sp__box js-otfm-sp-box__closed otfm-sp__E3F2FD boto_ver_solucion\" role=\"button\" tabindex=\"0\" aria-expanded=\"false\" data-otfm-spc=\"#E3F2FD\" style=\"text-align:center\">\n<div class=\"otfm-sp__title\"><strong>\u89e3\u6c7a\u7b56\u3092\u53c2\u7167<\/strong><\/div>\n<\/div>\n<p class=\"has-text-align-left\">\u884c\u5217\u5f0f\u306b 2 \u3064\u306e\u7b49\u3057\u3044\u884c\u307e\u305f\u306f\u8907\u6570\u306e\u884c\u307e\u305f\u306f 2 \u3064\u306e\u5217\u304c\u3042\u308b\u5834\u5408\u3001\u884c\u5217\u5f0f\u306f 0 (\u30d7\u30ed\u30d1\u30c6\u30a3 3) \u3092\u8fd4\u3057\u307e\u3059\u3002\u3057\u305f\u304c\u3063\u3066\u3001 <strong>1 \u884c\u76ee\u3068 3 \u884c\u76ee\u306f\u7b49\u3057\u3044\u305f\u3081\u3001\u884c\u5217\u5f0f\u306e\u7d50\u679c\u306f 0 \u306b\u306a\u308a\u307e\u3059\u3002<\/strong><\/p>\n<div class=\"wp-block-otfm-box-spoiler-end otfm-sp_end\"><\/div>\n<h3 class=\"wp-block-heading\">\u6f14\u7fd2 3<\/h3>\n<p>\u6b21\u306e\u884c\u5217\u5f0f\u3092\u8a08\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-96c5cfee4c4189e49b54fdf43b2a0457_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle \\begin{vmatrix} 1 &amp; 0 &amp; 2 &amp; 2 \\\\[1.1ex] 3 &amp; 1 &amp; 5 &amp; 6 \\\\[1.1ex] 1 &amp; 3 &amp; -2 &amp; 2 \\\\[1.1ex] 2 &amp; 2 &amp; 0 &amp; 4 \\end{vmatrix}\" title=\"Rendered by QuickLaTeX.com\" height=\"108\" width=\"106\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<div class=\"wp-block-otfm-box-spoiler-start otfm-sp__wrapper otfm-sp__box js-otfm-sp-box__closed otfm-sp__E3F2FD boto_ver_solucion\" role=\"button\" tabindex=\"0\" aria-expanded=\"false\" data-otfm-spc=\"#E3F2FD\" style=\"text-align:center\">\n<div class=\"otfm-sp__title\"><strong>\u89e3\u6c7a\u7b56\u3092\u53c2\u7167<\/strong><\/div>\n<\/div>\n<p class=\"has-text-align-left\">\u884c\u5217\u5f0f\u306b 2 \u3064\u306e\u7b49\u3057\u3044\u884c\u307e\u305f\u306f\u8907\u6570\u306e\u884c\u307e\u305f\u306f 2 \u3064\u306e\u5217\u304c\u3042\u308b\u5834\u5408\u3001\u884c\u5217\u5f0f\u306f 0 (\u30d7\u30ed\u30d1\u30c6\u30a3 3) \u3092\u8fd4\u3057\u307e\u3059\u3002\u3057\u305f\u304c\u3063\u3066\u3001 <strong>4 \u5217\u76ee\u306f 1 \u5217\u76ee\u306e 2 \u500d\u3067\u3042\u308b\u305f\u3081\u3001\u884c\u5217\u5f0f\u306e\u7d50\u679c\u306f 0 \u306b\u306a\u308a\u307e\u3059\u3002<\/strong> <\/p>\n<div class=\"wp-block-otfm-box-spoiler-end otfm-sp_end\"><\/div>\n<div class=\"adsb30\" style=\" margin:px; text-align:\"><\/div>\n<h3 class=\"wp-block-heading\">\u6f14\u7fd2 4<\/h3>\n<p>\u884c\u5217\u306e\u8981\u7d20\u306f\u308f\u304b\u308a\u307e\u305b\u3093\u304c\u3001\u884c\u5217\u5f0f\u306e\u7d50\u679c\u306f\u308f\u304b\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-e20d9016edd52f18d3ffc928d2658efe_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle \\begin{vmatrix} a &amp; b \\\\[1.1ex] c &amp; d  \\end{vmatrix} = 3\" title=\"Rendered by QuickLaTeX.com\" height=\"54\" width=\"77\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-left\">\u524d\u306e\u884c\u5217\u5f0f\u306e\u7d50\u679c\u3068\u884c\u5217\u5f0f\u306e\u30d7\u30ed\u30d1\u30c6\u30a3\u304b\u3089\u3001\u6b21\u306e\u884c\u5217\u5f0f\u306e\u7d50\u679c\u3092\u8a08\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-9c20de8d82171dc8fb784e2549521f37_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle \\mathbf{a} \\bm{)} \\ \\begin{vmatrix} a &amp; c  \\\\[1.1ex] b &amp; d  \\end{vmatrix} \\qquad \\mathbf{b} \\bm{)} \\ \\begin{vmatrix} b &amp; a  \\\\[1.1ex] d &amp; c  \\end{vmatrix} \\qquad \\mathbf{c} \\bm{)} \\ \\begin{vmatrix} a &amp; 3b  \\\\[1.1ex] c &amp; 3d  \\end{vmatrix}\" title=\"Rendered by QuickLaTeX.com\" height=\"54\" width=\"301\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<div class=\"wp-block-otfm-box-spoiler-start otfm-sp__wrapper otfm-sp__box js-otfm-sp-box__closed otfm-sp__E3F2FD boto_ver_solucion\" role=\"button\" tabindex=\"0\" aria-expanded=\"false\" data-otfm-spc=\"#E3F2FD\" style=\"text-align:center\">\n<div class=\"otfm-sp__title\"><strong>\u89e3\u6c7a\u7b56\u3092\u53c2\u7167<\/strong><\/div>\n<\/div>\n<p class=\"has-text-align-left\"><strong>\u306e\u305f\u3081\u306b\uff09<\/strong><\/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-6ee3d744a077ee8fdc07e806f13286be_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\begin{pmatrix} a &amp; c  \\\\ b &amp; d  \\end{pmatrix}\" title=\"Rendered by QuickLaTeX.com\" height=\"43\" width=\"55\" style=\"vertical-align: -17px;\"><\/p>\n<p>\u306e\u8ee2\u7f6e\u884c\u5217\u3067\u3059<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-1565c44a2743bb11e27ba41203073382_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\begin{pmatrix} a &amp; b  \\\\ c &amp; d  \\end{pmatrix}\" title=\"Rendered by QuickLaTeX.com\" height=\"43\" width=\"55\" style=\"vertical-align: -17px;\"><\/p>\n<p>\u3002\u305d\u3057\u3066\u3001\u884c\u5217\u306e\u884c\u5217\u5f0f\u306f\u3001\u305d\u306e\u8ee2\u7f6e\u884c\u5217\u306e\u884c\u5217\u5f0f\u3068\u7b49\u3057\u304f\u306a\u308a\u307e\u3059 (\u6027\u8cea 1)\u3002\u3057\u305f\u304c\u3063\u3066\u3001<strong>\u3053\u306e\u884c\u5217\u5f0f\u306e\u7d50\u679c\u3082 3 \u306b\u306a\u308a\u307e\u3059\u3002<\/strong><\/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-5bf7ae0a2ff32d75a6f7abafb623639c_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle  \\begin{vmatrix} a &amp; c  \\\\[1.1ex] b &amp; d  \\end{vmatrix}=\\begin{vmatrix} a &amp; b \\\\[1.1ex] c &amp; d  \\end{vmatrix}=\\bm{3}\" title=\"Rendered by QuickLaTeX.com\" height=\"54\" width=\"147\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-left\"> <strong>b)<\/strong>\u6c7a\u5b9a\u306b\u304a\u3044\u3066<\/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-9255a916d06e3d7689e830d0456f5c74_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\begin{vmatrix} b &amp; a  \\\\ d &amp; c  \\end{vmatrix}\" title=\"Rendered by QuickLaTeX.com\" height=\"44\" width=\"43\" style=\"vertical-align: -17px;\"><\/p>\n<p>\u5217 1 \u3068\u5217 2 \u306f\u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u306e\u6c7a\u5b9a\u5b50\u306b\u95a2\u3057\u3066\u5909\u66f4\u3055\u308c\u3066\u3044\u307e\u3059<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-3e84a753ce5d5bfe9dd6831b42857b30_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\begin{vmatrix} a &amp; b \\\\ c &amp; d  \\end{vmatrix}\" title=\"Rendered by QuickLaTeX.com\" height=\"44\" width=\"43\" style=\"vertical-align: -17px;\"><\/p>\n<p>\u3002\u3057\u305f\u304c\u3063\u3066\u3001\u30d7\u30ed\u30d1\u30c6\u30a3 4 \u306b\u3088\u308c\u3070\u3001<strong>\u7d50\u679c\u306f\u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u306e\u6c7a\u5b9a\u5b50\u306e\u7d50\u679c\u3068\u540c\u3058\u3067\u3059\u304c\u3001\u7b26\u53f7\u304c\u7570\u306a\u308a\u307e\u3059 (\u3064\u307e\u308a\u3001-3)\u3002<\/strong><\/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-d6d14aa2f6b8c7d1fd064daef8dd0eec_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle \\begin{vmatrix} b &amp; a  \\\\[1.1ex] d &amp; c  \\end{vmatrix} = - \\begin{vmatrix} a &amp; b \\\\[1.1ex] c &amp; d  \\end{vmatrix}= \\bm{-3}\" title=\"Rendered by QuickLaTeX.com\" height=\"54\" width=\"178\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-left\"> <strong>c)<\/strong>\u6c7a\u5b9a\u306b\u304a\u3044\u3066<\/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-f343927516e13005f5d744228bfdfec6_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\begin{vmatrix} a &amp; 3b  \\\\ c &amp; 3d  \\end{vmatrix}\" title=\"Rendered by QuickLaTeX.com\" height=\"44\" width=\"52\" style=\"vertical-align: -17px;\"><\/p>\n<p>\u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u306e\u884c\u5217\u5f0f\u306e 2 \u756a\u76ee\u306e\u5217\u5168\u4f53\u304c 3 \u3067\u4e57\u7b97\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u3057\u305f\u304c\u3063\u3066\u3001\u30d7\u30ed\u30d1\u30c6\u30a3 5 \u304b\u3089<strong>\u3001\u305d\u306e\u7d50\u679c\u306f\u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u306e\u884c\u5217\u5f0f\u306b 3 \u3092\u639b\u3051\u305f\u7d50\u679c\u3001\u3064\u307e\u308a 9 \u306b\u306a\u308b\u3068\u63a8\u6e2c\u3067\u304d\u307e\u3059\u3002<\/strong> <\/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-b1a7ffec429367a2fd967a197d0299d2_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle \\begin{vmatrix} a &amp; 3b  \\\\[1.1ex] c &amp; 3d  \\end{vmatrix} =3 \\begin{vmatrix} a &amp; b \\\\[1.1ex] c &amp; d  \\end{vmatrix} =3 \\cdot 3 = \\bm{9}\" title=\"Rendered by QuickLaTeX.com\" height=\"54\" width=\"222\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<div class=\"wp-block-otfm-box-spoiler-end otfm-sp_end\"><\/div>\n<h3 class=\"wp-block-heading\">\u6f14\u7fd2 5<\/h3>\n<p>\u3053\u308c\u3089 2 \u3064\u306e\u6c7a\u5b9a\u8981\u56e0\u306e\u7d50\u679c\u306f\u308f\u304b\u3063\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-e938c40ce401263da9835fa77fc9a1dd_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle\\vert A \\vert = \\begin{vmatrix} 1 &amp; 2 &amp; 0 &amp; 1 \\\\[1.1ex] -2 &amp; -1 &amp; 1 &amp; 0 \\\\[1.1ex] 1 &amp; 3 &amp; 3 &amp; -1 \\\\[1.1ex] 3 &amp; 4 &amp; 1 &amp; 1 \\end{vmatrix}=8\" title=\"Rendered by QuickLaTeX.com\" height=\"108\" width=\"215\" 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-6cea0d73e66099f2a10f71f7267baee9_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle\\vert B \\vert = \\begin{vmatrix} 0 &amp; 1 &amp; 3 &amp; 2 \\\\[1.1ex] -1 &amp; -2 &amp; 0 &amp; 0 \\\\[1.1ex] 3 &amp; 1 &amp; 1 &amp; 2 \\\\[1.1ex] -1 &amp; 2 &amp; 3 &amp; 1 \\end{vmatrix} = - 4\" title=\"Rendered by QuickLaTeX.com\" height=\"108\" width=\"216\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-left\">\u3053\u306e\u60c5\u5831\u304b\u3089\u3001\u6b21\u306e\u3088\u3046\u306b\u8a08\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-cce5c21696d6cc754d3b49cb7ea5457b_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle \\vert A \\cdot B \\vert\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"46\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<div class=\"wp-block-otfm-box-spoiler-start otfm-sp__wrapper otfm-sp__box js-otfm-sp-box__closed otfm-sp__E3F2FD boto_ver_solucion\" role=\"button\" tabindex=\"0\" aria-expanded=\"false\" data-otfm-spc=\"#E3F2FD\" style=\"text-align:center\">\n<div class=\"otfm-sp__title\"><strong>\u89e3\u6c7a\u7b56\u3092\u53c2\u7167<\/strong><\/div>\n<\/div>\n<p class=\"has-text-align-left\">\u884c\u5217\u5f0f\u306e\u7d50\u679c\u3092\u8a08\u7b97\u3059\u308b\u305f\u3081\u306b\u30014\u00d74 \u884c\u5217\u3092\u4e57\u7b97\u3059\u308b\u5fc5\u8981\u306f\u3042\u308a\u307e\u305b\u3093\u3002 <strong>2 \u3064\u306e\u884c\u5217\u306e\u7a4d\u306e\u884c\u5217\u5f0f\u306f\u3001\u5404\u884c\u5217\u306e\u884c\u5217\u5f0f\u306e\u7a4d\u306b\u500b\u5225\u306b\u7b49\u3057\u3044\u305f\u3081<\/strong>(\u30d7\u30ed\u30d1\u30c6\u30a3 6)\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-b1e9aef3e2499e7ed6d085319ce955e5_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\vert A \\cdot B \\vert  = \\vert A \\vert \\cdot \\vert B \\vert = 8 \\cdot (-4) = \\bm{-32}\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"268\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<div class=\"wp-block-otfm-box-spoiler-end otfm-sp_end\"><\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u3053\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u306f\u3001\u884c\u5217\u5f0f\u306e\u3059\u3079\u3066\u306e\u6027\u8cea\u304c\u4f55\u3067\u3042\u308b\u304b\u3092\u898b\u3066\u3044\u304d\u307e\u3059\u3002\u307e\u305f\u3001\u5404\u30d7\u30ed\u30d1\u30c6\u30a3\u3092\u5b8c\u5168\u306b\u7406\u89e3\u3067\u304d\u308b\u3088\u3046\u306b\u3001\u4f8b\u3092\u4f7f\u7528\u3057\u3066\u8aac\u660e\u3057\u307e\u3059\u3002\u3055\u3089\u306b\u3001\u6c7a\u5b9a\u5b50\u306e\u30d7\u30ed\u30d1\u30c6\u30a3\u306b\u95a2\u9023\u3059\u308b\u6f14\u7fd2\u3082\u3042\u308a\u307e\u3059\u3002 \u4ee5\u4e0b\u3067\u306f\u3001\u884c\u5217\u5f0f\u306e\u5404\u30d7\u30ed\u30d1\u30c6\u30a3 &hellip;<\/p>\n<p class=\"read-more\"> <a class=\"\" href=\"https:\/\/mathority.org\/ja\/%e8%a1%8c%e5%88%97%e5%bc%8f%e3%81%ae%e6%80%a7%e8%b3%aa-%e4%be%8b%e3%81%a8%e6%bc%94%e7%bf%92-2x2-3x3\/\"> <span class=\"screen-reader-text\">\u6c7a\u5b9a\u5b50\u306e\u30d7\u30ed\u30d1\u30c6\u30a3<\/span> \u3082\u3063\u3068\u8aad\u3080 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