{"id":285,"date":"2023-07-06T20:34:06","date_gmt":"2023-07-06T20:34:06","guid":{"rendered":"https:\/\/mathority.org\/cn\/%e8%a1%8c%e5%88%97%e5%bc%8f-3x3-sarrus-%e8%a7%84%e5%88%99%e7%a4%ba%e4%be%8b%e5%92%8c%e5%b7%b2%e8%a7%a3%e5%86%b3%e7%9a%84%e7%bb%83%e4%b9%a0\/"},"modified":"2023-07-06T20:34:06","modified_gmt":"2023-07-06T20:34:06","slug":"%e8%a1%8c%e5%88%97%e5%bc%8f-3x3-sarrus-%e8%a7%84%e5%88%99%e7%a4%ba%e4%be%8b%e5%92%8c%e5%b7%b2%e8%a7%a3%e5%86%b3%e7%9a%84%e7%bb%83%e4%b9%a0","status":"publish","type":"post","link":"https:\/\/mathority.org\/cn\/%e8%a1%8c%e5%88%97%e5%bc%8f-3x3-sarrus-%e8%a7%84%e5%88%99%e7%a4%ba%e4%be%8b%e5%92%8c%e5%b7%b2%e8%a7%a3%e5%86%b3%e7%9a%84%e7%bb%83%e4%b9%a0\/","title":{"rendered":"\u4f7f\u7528 sarrus \u89c4\u5219\u8ba1\u7b97 3&#215;3 \u77e9\u9635\u7684\u884c\u5217\u5f0f"},"content":{"rendered":"<p>\u5728\u672c\u9875\u4e2d\uff0c\u60a8\u5c06\u4e86\u89e3 3&#215;3 \u65b9\u9635\u7684\u884c\u5217\u5f0f\u662f\u4ec0\u4e48\u3002\u60a8\u5c06\u4e86\u89e3\u5982\u4f55\u4f7f\u7528 Sarrus \u89c4\u5219\u6c42\u89e3 3 \u9636\u884c\u5217\u5f0f\u3002\u6b64\u5916\uff0c\u60a8\u8fd8\u6709\u9010\u6b65\u89e3\u51b3\u7684\u793a\u4f8b\u548c\u7ec3\u4e60\uff0c\u56e0\u6b64\u60a8\u53ef\u4ee5\u7ec3\u4e60\u5e76\u5b8c\u7f8e\u7406\u89e3\u5b83\u3002<\/p>\n<p><strong><\/strong><\/p>\n<h2 class=\"wp-block-heading\"> 3\u00d73 \u77e9\u9635\u7684\u884c\u5217\u5f0f\u662f\u4ec0\u4e48\uff1f <\/h2>\n<p><strong><\/strong><\/p>\n<div class=\"adsb30\" style=\" margin:12px; text-align:center\">\n<div id=\"ezoic-pub-ad-placeholder-109\"><\/div>\n<\/div>\n<p> 3<strong>\u9636\u884c\u5217\u5f0f<\/strong>\u662f\u7ef4\u5ea6\u4e3a 3\u00d73 \u7684\u77e9\u9635<strong>\uff0c\u7531\u77e9\u9635\u6bcf\u4e00\u4fa7\u7684\u7ad6\u7ebf\u8868\u793a\u3002<\/strong>\u4f8b\u5982\uff0c\u5982\u679c\u6211\u4eec\u6709\u4ee5\u4e0b\u77e9\u9635\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-7b5e89b706893e88dd15882e3685afb1_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle A = \\begin{pmatrix} 2 &amp; 0 &amp; 4 \\\\[1.1ex] 3 &amp; -1 &amp; 5 \\\\[1.1ex] 1 &amp; 6 &amp; -2  \\end{pmatrix}\" title=\"Rendered by QuickLaTeX.com\" height=\"85\" width=\"150\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<p><strong>\u77e9\u9635A\u7684\u884c\u5217\u5f0f<\/strong>\u8868\u793a\u5982\u4e0b\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-41db04327de87a80f1e0e4dd6dcb220a_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle \\lvert A \\rvert = \\begin{vmatrix} 2 &amp; 0 &amp; 4 \\\\[1.1ex] 3 &amp; -1 &amp; 5 \\\\[1.1ex] 1 &amp; 6 &amp; -2 \\end{vmatrix}\" title=\"Rendered by QuickLaTeX.com\" height=\"86\" width=\"141\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<p>\u6b63\u5982\u60a8\u6240\u89c1\uff0c\u7f16\u5199 3 \u9636\u65b9\u9635\u7684\u884c\u5217\u5f0f\u5f88\u5bb9\u6613\u3002\u73b0\u5728\u6211\u4eec\u770b\u770b\u5982\u4f55\u89e3\u51b3\uff1a<\/p>\n<h2 class=\"wp-block-heading\">\u5982\u4f55\u8ba1\u7b973\u9636\u884c\u5217\u5f0f\uff1f<\/h2>\n<p><strong><\/strong><\/p>\n<p>\u8981\u751f\u6210 3\u00d73 \u77e9\u9635\u7684\u884c\u5217\u5f0f\uff0c\u60a8\u5fc5\u987b\u5e94\u7528<strong>Sarrus \u89c4\u5219<\/strong>\uff1a<\/p>\n<h2 class=\"wp-block-heading\">\u8428\u9c81\u65af\u89c4\u5219<\/h2>\n<p class=\"has-background\" style=\"background-color:#dff6ff\"><strong>\u8428\u9c81\u65af\u89c4\u5219<\/strong>\u89c4\u5b9a\uff0c\u8981\u8ba1\u7b97 3 \u9636\u884c\u5217\u5f0f\uff0c\u6211\u4eec\u5fc5\u987b\u5c06\u4e3b\u5bf9\u89d2\u7ebf\u5143\u7d20\u7684\u4e58\u79ef\u4e0e\u5176\u5e73\u884c\u5bf9\u89d2\u7ebf\u4e0e\u5176\u5bf9\u5e94\u76f8\u53cd\u9876\u70b9\u7684\u4e58\u79ef\u76f8\u52a0\uff0c\u7136\u540e\u51cf\u53bb\u6b21\u5bf9\u89d2\u7ebf\u5143\u7d20\u7684\u4e58\u79ef\uff0c\u5b83\u4eec\u7684\u5e73\u884c\u5bf9\u89d2\u7ebf\u4e0e\u5176\u5bf9\u5e94\u7684\u76f8\u5bf9\u9876\u70b9\u7684\u4e58\u79ef\u3002 <\/p>\n<p><strong><\/strong><\/p>\n<div class=\"adsb30\" style=\" margin:12px; text-align:center\">\n<div id=\"ezoic-pub-ad-placeholder-110\"><\/div>\n<\/div>\n<p>\u8fd9\u6837\u5199\u53ef\u80fd\u6709\u70b9\u96be\u4ee5\u7406\u89e3\uff0c\u4f46\u662f\u901a\u8fc7\u4e0b\u9762\u7684\u56fe\u8868\u548c\u793a\u4f8b\u6765\u770b\u770b 3&#215;3 \u884c\u5217\u5f0f\u7684\u8ba1\u7b97\u662f\u5982\u4f55\u5b8c\u6210\u7684\uff1a <\/p>\n<figure class=\"wp-block-image size-large is-resized\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/uploads\/2023\/07\/regle-de-sarrus.webp\" alt=\"\" class=\"wp-image-1550\" width=\"686\" height=\"135\" srcset=\"\" sizes=\"auto, \"><\/figure>\n<figure class=\"wp-block-image is-resized\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/uploads\/2023\/07\/calculer-le-determinant-dune-matrice-32153.webp\" alt=\"\" width=\"776\" height=\"133\" srcset=\"\" sizes=\"auto, \"><\/figure>\n<h2 class=\"wp-block-heading\"> 3\u00d73 \u884c\u5217\u5f0f\u7684\u793a\u4f8b\uff1a<\/h2>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-98e60cf465cd0eb7662d47770cd38231_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\begin{aligned} \\begin{vmatrix} 2 &amp; 1 &amp; 3 \\\\[1.1ex] -1 &amp; 1 &amp; 0 \\\\[1.1ex] -2 &amp; 4 &amp; 1 \\end{vmatrix} &amp; = 2 \\cdot 1 \\cdot 1 + 1 \\cdot 0 \\cdot (-2) + (-1) \\cdot 4 \\cdot 3 - (-2) \\cdot 1 \\cdot 3 - 4 \\cdot 0 \\cdot 2- (-1) \\cdot 1 \\cdot 1 \\\\ &amp; = 2 + 0 -12 +6 - 0 +1 \\\\[2ex] &amp; = \\bm{-3} \\end{aligned}\" title=\"Rendered by QuickLaTeX.com\" height=\"150\" width=\"637\" 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-41a53c1fd6eae1b51a280a6ce1e2ab91_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\begin{aligned} \\begin{vmatrix} 1 &amp; 0 &amp; 2 \\\\[1.1ex] 3 &amp; 2 &amp; 1 \\\\[1.1ex] 4 &amp; -3 &amp; -1 \\end{vmatrix} &amp; = 1\\cdot 2 \\cdot (-1) + 0 \\cdot 1 \\cdot 4 +3 \\cdot (-3) \\cdot 2 - 4 \\cdot 2 \\cdot 2 - (-3) \\cdot 1 \\cdot 1- 3 \\cdot 0 \\cdot (-1) \\\\ &amp; = -2 +0 -18 - 16 +3- 0 \\\\[2ex] &amp; = \\bm{-33} \\end{aligned}\" title=\"Rendered by QuickLaTeX.com\" height=\"150\" width=\"651\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<h2 class=\"wp-block-heading\">\u89e3\u51b3\u4e86 3 \u00d7 3 \u77e9\u9635\u7684\u884c\u5217\u5f0f\u95ee\u9898<\/h2>\n<h3 class=\"wp-block-heading\">\u7ec3\u4e601<\/h3>\n<p>\u6c42\u89e3\u4ee5\u4e0b 3&#215;3 \u884c\u5217\u5f0f\uff1a <\/p>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter is-resized\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/uploads\/2023\/07\/exemple-travaille-determinant-32153.webp\" alt=\"3x3 \u77e9\u9635\u884c\u5217\u5f0f\u7684\u5177\u4f53\u793a\u4f8b\" width=\"103\" height=\"110\" srcset=\"\" sizes=\"auto, \"><\/figure>\n<\/div>\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>\u67e5\u770b\u89e3\u51b3\u65b9\u6848<\/strong><\/div>\n<\/div>\n<p class=\"has-text-align-left\">\u4e3a\u4e86\u6c42\u89e3 3\u00d73 \u77e9\u9635\u7684\u884c\u5217\u5f0f\uff0c\u6211\u4eec\u5fc5\u987b\u5e94\u7528 Sarrus \u89c4\u5219\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-8f288312b72f3bbabc35ee64bf580d8c_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle\\begin{aligned} \\begin{vmatrix} 2 &amp; 1 &amp; 0 \\\\[1.1ex] 3 &amp; 1 &amp; -1 \\\\[1.1ex] 2 &amp; 0 &amp; 4 \\end{vmatrix} &amp; = 2 \\cdot 1 \\cdot 4 + 1 \\cdot (-1) \\cdot 2 + 3 \\cdot 0 \\cdot 0 - 2 \\cdot 1 \\cdot 0 - 0 \\cdot (-1) \\cdot 2- 3 \\cdot 1 \\cdot 4 \\\\ &amp; = 8 -2 +0 -0- 0-12 \\\\[2ex] &amp; = \\bm{-6} \\end{aligned}\" title=\"Rendered by QuickLaTeX.com\" height=\"150\" width=\"583\" 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\">\u7ec3\u4e602<\/h3>\n<p>\u8ba1\u7b97\u4ee5\u4e0b 3 \u9636\u884c\u5217\u5f0f\uff1a <\/p>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter is-resized\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/uploads\/2023\/07\/determinant-dexercice-resolu-32153.webp\" alt=\"\u7ec3\u4e60\u9010\u6b65\u6c42\u89e3 3x3 \u77e9\u9635\u7684\u884c\u5217\u5f0f\" width=\"103\" height=\"110\" srcset=\"\" sizes=\"auto, \"><\/figure>\n<\/div>\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>\u67e5\u770b\u89e3\u51b3\u65b9\u6848<\/strong><\/div>\n<\/div>\n<p class=\"has-text-align-left\">\u8981\u8ba1\u7b97\u4e09\u9636\u77e9\u9635\u7684\u884c\u5217\u5f0f\uff0c\u6211\u4eec\u5fc5\u987b\u4f7f\u7528 Sarrus \u89c4\u5219\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-64078968233ec50d2e793309d55e55fc_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle\\begin{aligned} \\begin{vmatrix} 1 &amp; -2 &amp; 1 \\\\[1.1ex] 4 &amp; 2 &amp; 1 \\\\[1.1ex] 3 &amp; -1 &amp; 2 \\end{vmatrix} &amp; = 1 \\cdot 2 \\cdot 2 + (-2) \\cdot 1 \\cdot 3 + 4 \\cdot (-1) \\cdot 1 - 3 \\cdot 2 \\cdot 1 - (-1) \\cdot 1 \\cdot 1 - 4 \\cdot (-2) \\cdot 2 \\\\ &amp; = 4 -6 -4 -6+1+16 \\\\[2ex] &amp; = \\bm{5} \\end{aligned}\" title=\"Rendered by QuickLaTeX.com\" height=\"150\" width=\"637\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<div class=\"wp-block-otfm-box-spoiler-end otfm-sp_end\"><\/div>\n<p><strong><\/strong><\/p>\n<div class=\"adsb30\" style=\" margin:12px; text-align:center\">\n<div id=\"ezoic-pub-ad-placeholder-111\"><\/div>\n<p><strong><br \/><\/strong><\/p>\n<\/div>\n<h3 class=\"wp-block-heading\">\u7ec3\u4e603<\/h3>\n<p>\u6c42\u4ee5\u4e0b 3\u00d73 \u77e9\u9635\u884c\u5217\u5f0f\u7684\u89e3\uff1a <\/p>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter is-resized\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/uploads\/2023\/07\/exercices-resolus-de-determinants-33.webp\" alt=\"\u9010\u6b65\u89e3\u51b3 3x3 \u77e9\u9635\u884c\u5217\u5f0f\u7684\u7ec3\u4e60\" width=\"139\" height=\"111\" srcset=\"\" sizes=\"auto, \"><\/figure>\n<\/div>\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>\u67e5\u770b\u89e3\u51b3\u65b9\u6848<\/strong><\/div>\n<\/div>\n<p class=\"has-text-align-left\">\u8981\u786e\u5b9a 3&#215;3 \u77e9\u9635\u7684\u884c\u5217\u5f0f\uff0c\u6211\u4eec\u5fc5\u987b\u4f7f\u7528 Sarrus \u89c4\u5219\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-fd4494ae66a604834b8f9f47fcbbe41d_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle\\begin{aligned} \\begin{vmatrix}1 &amp; 3 &amp; -2 \\\\[1.1ex] 2 &amp; -3 &amp; 4 \\\\[1.1ex] -1 &amp; 2 &amp; 5 \\end{vmatrix} &amp; = \\\\ &amp; = 1 \\cdot (-3) \\cdot 5 + 3 \\cdot 4 \\cdot (-1) + 2 \\cdot 2 \\cdot (-2) \\ - \\\\[1.1ex] &amp; \\phantom{=} - (-1) \\cdot (-3) \\cdot (-2) - 2 \\cdot 4 \\cdot 1 - 2 \\cdot 3 \\cdot 5 \\\\[2.5ex] &amp; = -15 -12 -8 +6-8-30 \\\\[2.5ex] &amp; = \\bm{-67} \\end{aligned}\" title=\"Rendered by QuickLaTeX.com\" height=\"235\" width=\"435\" 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\">\u7ec3\u4e604<\/h3>\n<p>\u6c42\u4ee5\u4e0b 3 \u9636\u77e9\u9635\u884c\u5217\u5f0f\u7684\u89e3\uff1a <\/p>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter is-resized\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/uploads\/2023\/07\/exercice-resolu-dun-determinant-dune-matrice-33.webp\" alt=\"\u5df2\u89e3\u51b3 3x3 \u77e9\u9635\u884c\u5217\u5f0f\u7684\u7ec3\u4e60\" width=\"122\" height=\"113\" srcset=\"\" sizes=\"auto, \"><\/figure>\n<\/div>\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>\u67e5\u770b\u89e3\u51b3\u65b9\u6848<\/strong><\/div>\n<\/div>\n<p class=\"has-text-align-left\">\u4e3a\u4e86\u627e\u5230 3\u00d73 \u77e9\u9635\u884c\u5217\u5f0f\u7684\u89e3\uff0c\u6211\u4eec\u5fc5\u987b\u5e94\u7528 Sarrus \u516c\u5f0f\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-8e811024d460a60a1df59983b1f700e8_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle\\begin{aligned} \\begin{vmatrix} 3 &amp; 1 &amp; -1 \\\\[1.1ex] 6 &amp; 1 &amp; -2 \\\\[1.1ex] 4 &amp; -3 &amp; 2 \\end{vmatrix} &amp; = \\\\ &amp; = 3 \\cdot 1 \\cdot 2 + 1 \\cdot (-2) \\cdot 4 + 6 \\cdot (-3) \\cdot (-1) \\ - \\\\[1.1ex] &amp; \\phantom{=} - 4 \\cdot 1 \\cdot (-1) - (-3) \\cdot (-2) \\cdot 3 - 6 \\cdot 1 \\cdot 2 \\\\[2.5ex] &amp; =6 -8 +18 +4-18-12 \\\\[2.5ex] &amp; = \\bm{-10} \\end{aligned}\" title=\"Rendered by QuickLaTeX.com\" height=\"235\" width=\"422\" 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\">\u7ec3\u4e605<\/h3>\n<p>\u627e\u5230 \u7684\u503c<\/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>\u5b83\u53d6\u6d88\u4e86\u4ee5\u4e0b\u4e09\u9636\u884c\u5217\u5f0f\uff1a <\/p>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter is-resized\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/uploads\/2023\/07\/exercices-resolus-de-determinants-dordre-3.webp\" alt=\"\u9010\u6b65\u89e3\u51b3 3 \u9636\u884c\u5217\u5f0f\u7684\u7ec3\u4e60\" width=\"121\" height=\"109\" srcset=\"\" sizes=\"auto, \"><\/figure>\n<\/div>\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>\u67e5\u770b\u89e3\u51b3\u65b9\u6848<\/strong><\/div>\n<\/div>\n<p class=\"has-text-align-left\">\u6211\u4eec\u9996\u5148\u6839\u636e\u8428\u52d2\u65af\u89c4\u5219\u8ba1\u7b97\u884c\u5217\u5f0f\u7684\u503c\uff0c\u4f5c\u4e3a\u4ee5\u4e0b\u51fd\u6570<\/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-e5d80bc6266288d3d9b79acb4281f64b_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"a :\" title=\"Rendered by QuickLaTeX.com\" height=\"8\" width=\"18\" 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-07e67cfc5e45c0a11c35d643cd4c1c78_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle\\begin{aligned}\\begin{vmatrix} 4 &amp; 6 &amp; -5 \\\\[1.1ex] -2 &amp; 4 &amp; 2 \\\\[1.1ex] -1 &amp; 2 &amp; a \\end{vmatrix} &amp; = \\\\ &amp; = 4 \\cdot 4 \\cdot a + 6 \\cdot 2 \\cdot (-1) + (-2) \\cdot 2 \\cdot (-5) \\ - \\\\[1.1ex] &amp; \\phantom{=}- (-1) \\cdot 4 \\cdot (-5) - 2 \\cdot 2 \\cdot 4 - (-2) \\cdot 6 \\cdot a \\\\[2.5ex] &amp; = 16a -12 + 20 - 20 - 16 +12a \\\\[2.5ex] &amp; = 28a -28 \\end{aligned}\" title=\"Rendered by QuickLaTeX.com\" height=\"235\" width=\"422\" style=\"vertical-align: 0px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-left\">\u4e3a\u4e86\u4f7f\u884c\u5217\u5f0f\u6d88\u5931\uff0c\u7ed3\u679c\u5fc5\u987b\u4e3a0\u3002\u56e0\u6b64\uff0c\u6211\u4eec\u5c06\u7ed3\u679c\u8bbe\u7f6e\u4e3a0\u5e76\u6c42\u89e3\u65b9\u7a0b\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-952115a30fff34de20c4ecde3bbb4b15_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"28a-28=0\" title=\"Rendered by QuickLaTeX.com\" height=\"12\" width=\"99\" 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-32cfa3a6788c4564b2807c4dbe65b59e_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"28a=28\" title=\"Rendered by QuickLaTeX.com\" height=\"12\" width=\"69\" 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-9b25a023b34312f26158baa4e03bd6e6_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"a=\\cfrac{28}{28} = \\bm{1}\" title=\"Rendered by QuickLaTeX.com\" height=\"38\" width=\"84\" style=\"vertical-align: -12px;\"><\/p>\n<\/p>\n<div class=\"wp-block-otfm-box-spoiler-end otfm-sp_end\"><\/div>\n<p><strong><\/strong><\/p>\n<div class=\"adsb30\" style=\" margin:12px; text-align:center\">\n<div id=\"ezoic-pub-ad-placeholder-116\"><\/div>\n<p><strong><br \/><\/strong><\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u5728\u672c\u9875\u4e2d\uff0c\u60a8\u5c06\u4e86\u89e3 3&#215;3 \u65b9\u9635\u7684\u884c\u5217\u5f0f\u662f\u4ec0\u4e48\u3002\u60a8\u5c06\u4e86\u89e3\u5982\u4f55\u4f7f\u7528 Sarrus \u89c4\u5219\u6c42\u89e3 3 \u9636\u884c\u5217 &hellip;<\/p>\n<p class=\"read-more\"> <a class=\"\" href=\"https:\/\/mathority.org\/cn\/%e8%a1%8c%e5%88%97%e5%bc%8f-3x3-sarrus-%e8%a7%84%e5%88%99%e7%a4%ba%e4%be%8b%e5%92%8c%e5%b7%b2%e8%a7%a3%e5%86%b3%e7%9a%84%e7%bb%83%e4%b9%a0\/\"> <span class=\"screen-reader-text\">\u4f7f\u7528 sarrus \u89c4\u5219\u8ba1\u7b97 3&#215;3 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