{"id":347,"date":"2023-07-06T01:36:03","date_gmt":"2023-07-06T01:36:03","guid":{"rendered":"https:\/\/mathority.org\/ja\/when-%e3%81%8c%e6%ad%a3%e8%a6%8f%e8%a1%8c%e5%88%97%e3%81%be%e3%81%9f%e3%81%af%e5%8f%af%e9%80%86%e8%a1%8c%e5%88%97%e3%81%ae%e4%be%8b%e3%81%a8%e3%83%97%e3%83%ad%e3%83%91%e3%83%86%e3%82%a3\/"},"modified":"2023-07-06T01:36:03","modified_gmt":"2023-07-06T01:36:03","slug":"when-%e3%81%8c%e6%ad%a3%e8%a6%8f%e8%a1%8c%e5%88%97%e3%81%be%e3%81%9f%e3%81%af%e5%8f%af%e9%80%86%e8%a1%8c%e5%88%97%e3%81%ae%e4%be%8b%e3%81%a8%e3%83%97%e3%83%ad%e3%83%91%e3%83%86%e3%82%a3","status":"publish","type":"post","link":"https:\/\/mathority.org\/ja\/when-%e3%81%8c%e6%ad%a3%e8%a6%8f%e8%a1%8c%e5%88%97%e3%81%be%e3%81%9f%e3%81%af%e5%8f%af%e9%80%86%e8%a1%8c%e5%88%97%e3%81%ae%e4%be%8b%e3%81%a8%e3%83%97%e3%83%ad%e3%83%91%e3%83%86%e3%82%a3\/","title":{"rendered":"\u901a\u5e38\u306e\u30b4\u30fc\u30eb\u30c9\u306e\u53ef\u9006\u30de\u30c8\u30ea\u30c3\u30af\u30b9"},"content":{"rendered":"<p>\u3053\u306e\u30da\u30fc\u30b8\u3067\u306f\u3001\u6b63\u5247\u884c\u5217\u307e\u305f\u306f\u53ef\u9006\u884c\u5217\u306e\u8aac\u660e\u3068\u3001\u884c\u5217\u306e\u9006\u884c\u5217\u304c\u3044\u3064\u5b9f\u884c\u3067\u304d\u308b\u304b\u3001\u3044\u3064\u5b9f\u884c\u3067\u304d\u306a\u3044\u304b\u3092\u77e5\u308b\u65b9\u6cd5\u306b\u3064\u3044\u3066\u8aac\u660e\u3057\u307e\u3059\u3002\u3055\u3089\u306b\u3001\u6982\u5ff5\u3092\u5b8c\u5168\u306b\u7406\u89e3\u3059\u308b\u305f\u3081\u306b\u6b63\u5247\u884c\u5217\u306e\u4f8b\u3082\u3044\u304f\u3064\u304b\u793a\u3057\u3001\u6700\u5f8c\u306b\u3053\u306e\u30bf\u30a4\u30d7\u306e\u884c\u5217\u306e\u3059\u3079\u3066\u306e\u30d7\u30ed\u30d1\u30c6\u30a3\u3092\u793a\u3057\u307e\u3059\u3002<\/p>\n<h2 class=\"wp-block-heading\">\u6b63\u5247\u884c\u5217\u3068\u306f\u4f55\u3067\u3059\u304b?<\/h2>\n<p>\u6b63\u5247\u884c\u5217\u306e\u5b9a\u7fa9\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/p>\n<p class=\"has-background\" style=\"background-color:#dff6ff\"><strong>\u6b63\u5247\u884c\u5217\u306f<\/strong>\u3001\u53cd\u8ee2\u53ef\u80fd\u306a\u6b63\u65b9\u884c\u5217\u3067\u3059\u3002\u3064\u307e\u308a\u3001\u524d\u8a18\u884c\u5217\u306e\u9006\u884c\u5217\u3092\u8a08\u7b97\u3067\u304d\u307e\u3059\u3002\u3057\u305f\u304c\u3063\u3066\u3001\u305d\u306e\u884c\u5217\u5f0f\u306f\u975e\u30bc\u30ed (0) \u3067\u3059\u3002<\/p>\n<p>\u901a\u5e38\u306e\u884c\u5217\u306f<strong>\u3001\u53ef\u9006\u884c\u5217\u3001\u975e\u7279\u7570\u884c\u5217\u3001\u307e\u305f\u306f\u975e\u7e2e\u9000\u884c\u5217\u3068<\/strong>\u3082\u547c\u3070\u308c\u307e\u3059\u3002<\/p>\n<p>\u901a\u5e38\u306e\u884c\u5217\u306e\u53cd\u5bfe\u306e\u884c\u5217\u306f\u3001\u7279\u7570\u884c\u5217\u307e\u305f\u306f\u7e2e\u9000\u884c\u5217\u3067\u3059\u3002<\/p>\n<p>\u3057\u305f\u304c\u3063\u3066\u3001\u884c\u5217\u304c\u6b63\u5247\u304b\u7279\u7570\u304b\u3092\u77e5\u308b\u306b\u306f\u3001\u3064\u307e\u308a\u884c\u5217\u304c\u53ef\u9006\u304b\u3069\u3046\u304b\u3092\u77e5\u308b\u306b\u306f\u3001\u884c\u5217\u306e\u884c\u5217\u5f0f\u3092\u89e3\u304f\u3060\u3051\u3067\u5341\u5206\u3067\u3059\u3002<\/p>\n<ul>\n<li>\u884c\u5217\u306e\u884c\u5217\u5f0f\u304c\u30bc\u30ed\u4ee5\u5916\u306e\u5834\u5408\u3001\u884c\u5217\u306f\u6b63\u5247\u307e\u305f\u306f\u53ef\u9006\u884c\u5217\u3067\u3059\u3002<\/li>\n<\/ul>\n<ul>\n<li>\u884c\u5217\u306e\u884c\u5217\u5f0f\u304c\u30bc\u30ed\u306b\u7b49\u3057\u3044\u5834\u5408\u3001\u884c\u5217\u306f\u7279\u7570\u3067\u3042\u308b\u304b\u3001\u53ef\u9006\u7684\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/li>\n<\/ul>\n<p>\u7d50\u8ad6\u3068\u3057\u3066\u3001\u884c\u5217\u306e\u884c\u5217\u5f0f\u3092\u8a08\u7b97\u3059\u308b\u3053\u3068\u306f\u3001\u884c\u5217\u306b\u9006\u884c\u5217\u304c\u3042\u308b\u304b\u3069\u3046\u304b\u3092\u77e5\u308b\u6700\u3082\u7c21\u5358\u306a\u65b9\u6cd5\u3067\u3042\u308b\u305f\u3081\u3001\u884c\u5217\u306e\u53ef\u9006\u6027\u3092\u5224\u65ad\u3059\u308b\u306b\u306f\u3053\u308c\u3092\u304a\u52e7\u3081\u3057\u307e\u3059\u3002<\/p>\n<p>\u884c\u5217\u3092\u9006\u306b\u3059\u308b\u65b9\u6cd5\u3092\u77e5\u308a\u305f\u3044\u5834\u5408\u306f\u3001<a href=\"https:\/\/mathority.org\/ja\/\u9006\u884c\u5217\/\">\u9006\u884c\u5217\u306e\u516c\u5f0f<\/a>\u3092\u53c2\u7167\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u884c\u5217\u3092\u9006\u306b\u3059\u308b\u65b9\u6cd5\u3092\u6bb5\u968e\u7684\u306b\u8aac\u660e\u3057\u3066\u304a\u308a\u3001\u3044\u304f\u3064\u304b\u306e\u4f8b\u3068\u7df4\u7fd2\u7528\u306e\u89e3\u6c7a\u6e08\u307f\u6f14\u7fd2\u3082\u898b\u3064\u304b\u308a\u307e\u3059\u3002<\/p>\n<h2 class=\"wp-block-heading\">\u6b63\u5247\u884c\u5217\u307e\u305f\u306f\u53ef\u9006\u884c\u5217\u306e\u4f8b<\/h2>\n<p>\u6b63\u5247\u884c\u5217\u307e\u305f\u306f\u53ef\u9006\u884c\u5217\u306e\u610f\u5473\u3092\u7406\u89e3\u3057\u305f\u3089\u3001\u3055\u307e\u3056\u307e\u306a\u6b21\u5143\u306e\u6b63\u5247\u884c\u5217\u306e\u4f8b\u3092\u3044\u304f\u3064\u304b\u898b\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n<h3 class=\"wp-block-heading\">\u901a\u5e38\u307e\u305f\u306f\u53ef\u9006 2\u00d72 \u884c\u5217\u306e\u4f8b<\/h3>\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\/exemple-de-matrice-reguliere-ou-inversible-22152-1.webp\" alt=\"\u6b21\u5143 2x2 \u306e\u6b63\u5247\u884c\u5217\u307e\u305f\u306f\u53ef\u9006\u884c\u5217\u306e\u4f8b\" class=\"wp-image-3654\" width=\"67\" height=\"64\" srcset=\"\" sizes=\"auto, \"><\/figure>\n<\/div>\n<p>\u884c\u5217\u5f0f\u3092\u8a08\u7b97\u3059\u308b\u3053\u3068\u3067\u3001\u305d\u308c\u304c\u6b63\u5247\u884c\u5217\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-9e4a833393b2e66b49eb3b434136b755_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle\\begin{vmatrix} 3&amp;5 \\\\[1.1ex] 1 &amp; 2\\end{vmatrix}=1\\bm{\\neq 0}\" title=\"Rendered by QuickLaTeX.com\" height=\"54\" width=\"104\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<p> 2 \u6b21\u884c\u5217\u306e\u884c\u5217\u5f0f\u306f 0 \u3068\u306f\u7570\u306a\u308b\u305f\u3081\u3001\u6b63\u5247\u884c\u5217\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<div class=\"adsb30\" style=\" margin:px; text-align:\"><\/div>\n<h3 class=\"wp-block-heading\">\u901a\u5e38\u307e\u305f\u306f\u53ef\u9006 3\u00d73 \u884c\u5217\u306e\u4f8b<\/h3>\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\/exemple-de-matrice-reguliere-ou-inversible-32153-1.webp\" alt=\"\u6b21\u5143 3x3 \u306e\u6b63\u5247\u884c\u5217\u307e\u305f\u306f\u53ef\u9006\u884c\u5217\u306e\u4f8b\" class=\"wp-image-3655\" width=\"101\" height=\"105\" srcset=\"\" sizes=\"auto, \"><\/figure>\n<\/div>\n<p>\u884c\u5217\u306e\u884c\u5217\u5f0f\u3092\u4f5c\u6210\u3057\u3066\u3001\u305d\u308c\u304c\u53ef\u9006\u884c\u5217\u3067\u3042\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3059\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-c0389d86d007f9ee667b14c0071b6395_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle\\begin{vmatrix} 2&amp;1&amp;4\\\\[1.1ex] 3&amp;1&amp;0\\\\[1.1ex] 1&amp;0&amp;3\\end{vmatrix}=-7\\bm{\\neq 0}\" title=\"Rendered by QuickLaTeX.com\" height=\"86\" width=\"143\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<p>\u6b21\u6570 3 \u306e\u884c\u5217\u306e\u884c\u5217\u5f0f\u306f 0 \u4ee5\u5916\u306e\u7d50\u679c\u3092\u4e0e\u3048\u308b\u305f\u3081\u3001\u901a\u5e38\u306e\u884c\u5217\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<h3 class=\"wp-block-heading\">\u901a\u5e38\u307e\u305f\u306f\u53ef\u9006\u306e 4\u00d74 \u884c\u5217\u306e\u4f8b<\/h3>\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\/exemple-de-matrice-reguliere-ou-inversible-42154-1.webp\" alt=\"\u6b21\u5143 4x4 \u306e\u6b63\u5247\u884c\u5217\u307e\u305f\u306f\u53ef\u9006\u884c\u5217\u306e\u4f8b\" class=\"wp-image-3656\" width=\"156\" height=\"129\" srcset=\"\" sizes=\"auto, \"><\/figure>\n<\/div>\n<p>\u884c\u5217\u306e\u884c\u5217\u5f0f\u3092\u53d6\u5f97\u3059\u308b\u3068\u3001\u305d\u308c\u304c\u6b63\u5247\u884c\u5217\u3067\u3042\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-2a07b3fa1ed83267c0bc723dd027d724_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle\\begin{vmatrix} 1&amp;3&amp;-2&amp;0\\\\[1.1ex] 2&amp;-1&amp;0&amp;5\\\\[1.1ex] 1&amp;3&amp;1&amp;2\\\\[1.1ex] 0&amp;-1&amp;2&amp;4\\end{vmatrix}=-49\\bm{\\neq 0}\" title=\"Rendered by QuickLaTeX.com\" height=\"108\" width=\"204\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<p>\u6b21\u6570 4 \u306e\u884c\u5217\u306e\u884c\u5217\u5f0f\u306f\u30bc\u30ed\u3067\u306f\u306a\u3044\u305f\u3081\u3001\u53ef\u9006\u884c\u5217\u3067\u3059\u3002<\/p>\n<p class=\"has-background\" style=\"background-color:#fffde7\"><strong>\u8b66\u544a:<\/strong>\u884c\u5217\u5f0f\u306e\u8a08\u7b97\u306b\u7591\u554f\u304c\u3042\u308b\u5834\u5408\u306f\u3001<a href=\"https:\/\/mathority.org\/ja\" rel=\"nofollow\">\u884c\u5217\u5f0f\u306e\u8a08\u7b97\u65b9\u6cd5\u306e<\/a>\u30da\u30fc\u30b8\u3092\u53c2\u7167\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<h2 class=\"wp-block-heading\">\u6b63\u5247\u884c\u5217\u307e\u305f\u306f\u53ef\u9006\u884c\u5217\u306e\u30d7\u30ed\u30d1\u30c6\u30a3<\/h2>\n<p>\u6b63\u5247\u884c\u5217\u307e\u305f\u306f\u53ef\u9006\u884c\u5217\u306f\u7dda\u5f62\u4ee3\u6570\u306b\u3068\u3063\u3066\u975e\u5e38\u306b\u91cd\u8981\u3067\u3042\u308a\u3001\u3053\u308c\u306f\u6b21\u306e\u7279\u6027\u306b\u3088\u308b\u3082\u306e\u3067\u3059\u3002<\/p>\n<ul>\n<li> A \u304c\u53ef\u9006\u884c\u5217\u306e\u5834\u5408\u3001\u305d\u306e\u8ee2\u7f6e\u884c\u5217\u307e\u305f\u306f\u8ee2\u7f6e\u884c\u5217\u3082\u540c\u69d8\u3067\u3059\u3002\u3055\u3089\u306b\u3001\u8ee2\u7f6e\u306e\u9006\u884c\u5217\u306f\u9006\u884c\u5217\u306e\u8ee2\u7f6e\u3068\u7b49\u3057\u304f\u306a\u308a\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-599aaadb6e9a0ed681ae1ed37cbe75f9_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle \\left(A^t\\right)^{-1}=\\left(A^{-1}\\right)^t\" title=\"Rendered by QuickLaTeX.com\" height=\"27\" width=\"128\" style=\"vertical-align: -7px;\"><\/p>\n<\/p>\n<ul>\n<li>\u901a\u5e38\u306e\u884c\u5217\u306e\u7bc4\u56f2\u306f\u5e38\u306b\u53ef\u80fd\u306a\u6700\u5927\u5024\u3067\u3059\u3002\u3064\u307e\u308a\u3001\u7bc4\u56f2\u306f\u884c\u5217\u306e\u6b21\u5143\u306b\u76f8\u5f53\u3057\u307e\u3059\u3002<\/li>\n<\/ul>\n<ul>\n<li> 2 \u3064\u306e\u53ef\u9006\u884c\u5217\u9593\u306e\u884c\u5217\u7a4d\u306b\u3088\u308a\u3001\u5225\u306e\u901a\u5e38\u306e\u884c\u5217\u304c\u751f\u6210\u3055\u308c\u307e\u3059\u3002\u3053\u306e\u6761\u4ef6\u306f\u3001\u884c\u5217\u5f0f\u306e\u30d7\u30ed\u30d1\u30c6\u30a3\u3092\u4f7f\u7528\u3057\u3066\u7c21\u5358\u306b\u8a3c\u660e\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-88d940d46390d4f5f0d6e694ac5a18d5_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle \\left.\\begin{array}{l}\\text{det}(A\\cdot B)=\\text{det}(A)\\cdot\\text{det}(B) \\\\[2ex] \\text{det}(A)\\neq 0 \\quad ; \\quad \\text{det}(B) \\neq 0 \\end{array}\\right\\} \\longrightarrow \\ \\text{det}(A\\cdot B) \\neq 0\" title=\"Rendered by QuickLaTeX.com\" height=\"65\" width=\"399\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<ul>\n<li>\u3059\u3079\u3066\u306e<a href=\"https:\/\/mathority.org\/ja\/\u76f4\u4ea4\u884c\u5217\u306e\u4f8b-\u30d5\u309a\u30ed\u30cf\u309a\u30c6\u30a3-2x2-3x3\/\">\u76f4\u4ea4\u884c\u5217\u306f<\/a>\u540c\u6642\u306b\u6b63\u5247\u884c\u5217\u3067\u3082\u3042\u308a\u307e\u3059\u3002<\/li>\n<\/ul>\n<ul>\n<li>\u9023\u7acb\u4e00\u6b21\u65b9\u7a0b\u5f0f\u3092\u8868\u3059\u884c\u5217\u3092 A \u3068\u3057\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-d22ca4e8614c8321dd6cc5a4fe4737ce_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"(Ax=b)\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"67\" style=\"vertical-align: -5px;\"><\/p>\n<p> \u3001 A \u304c\u6b63\u5247\u884c\u5217\u306e\u5834\u5408\u3001\u30b7\u30b9\u30c6\u30e0\u306f\u4e00\u610f\u306e\u89e3\u3092\u6301\u3061\u3001\u3057\u305f\u304c\u3063\u3066\u4e92\u63db\u6027\u306e\u3042\u308b\u884c\u5217\u5f0f\u30b7\u30b9\u30c6\u30e0 (SCD) \u306b\u306a\u308a\u307e\u3059\u3002<\/li>\n<\/ul>\n<ul>\n<li>\u307e\u305f\u3001\u7cfb\u304c\u5747\u4e00\u7cfb\u3067\u3042\u308c\u3070\u3001\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-838426cb27867bef9fede0552233b03e_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"(Ax=0)\" title=\"Rendered by 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