{"id":435,"date":"2026-10-03T06:00:57","date_gmt":"2026-10-03T03:00:57","guid":{"rendered":"https:\/\/wpcalc.com\/fr\/?p=435"},"modified":"2026-10-03T06:00:57","modified_gmt":"2026-10-03T03:00:57","slug":"calculateur-inverse-matrice-3x3","status":"publish","type":"post","link":"https:\/\/wpcalc.com\/fr\/mathematiques\/calculateur-inverse-matrice-3x3\/","title":{"rendered":"Calculateur d\u2019inverse de matrice 3\u00d73"},"content":{"rendered":"<section class=\"not-prose calculator-box\" aria-labelledby=\"calculator-title\"><div class=\"flex items-baseline sm:items-center justify-between gap-2 sm:gap-3\"><div class=\"flex flex-col sm:flex-row sm:items-center gap-2\"><span class=\"icon icon-calculator text-primary-700! text-base! dark:text-primary-300!\" aria-hidden=\"true\"><\/span><h2 id=\"calculator-title\" class=\"text-lg font-display font-bold\">Trouvez l&#039;inverse de votre matrice 3\u00d73<\/h2><\/div><div class=\"calcdash-favorite group\">\n  <button type=\"button\" class=\"favorite\" id=\"favorite\" data-favorite-id=\"435\" data-favorite-title=\"Inverse de matrice 3\u00d73\" data-favorite-url=\"https:\/\/wpcalc.com\/fr\/mathematiques\/calculateur-inverse-matrice-3x3\/\" data-favorite-excerpt=\"Saisissez les neuf \u00e9l\u00e9ments d\u2019une matrice 3\u00d73 pour trouver son inverse, son d\u00e9terminant et sa comatrice. Le calculateur utilise la m\u00e9thode des cofacteurs et vous indique si la matrice est singuli\u00e8re.\" aria-label=\"Ajouter aux favoris\" data-favorite-icon=\"icon icon-binary\">\n    <span class=\"icon icon-shape-star-empty\" aria-hidden=\"true\"><\/span>\n  <\/button>\n  <div class=\"calcdash-favorite__tip\" aria-hidden=\"true\">\n   <span class=\"favorite-tooltip\" id=\"favorite-tooltip\"><\/span>\n  <\/div>\n  <span class=\"sr-only\" role=\"status\" id=\"favorite-status\"><\/span>\n<\/div><\/div><form action=\"https:\/\/wpcalc.com\/fr\/mathematiques\/calculateur-inverse-matrice-3x3\/\" method=\"POST\" class=\"calculator\" id=\"calculator-435\" data-post=\"435\"><fieldset class=\"fieldset-input is-3\"><legend class=\"sr-only\">Champs de saisie<\/legend><div class=\"field has-term\" id=\"input-1\"><label for=\"field-1\">a\u2081\u2081<\/label><div class=\"term\">a11<\/div>  <div class=\"absolute bottom-0 left-16 top-8 w-2 h-0.5 bg-blue-500\"><\/div><input type=\"number\" name=\"a\" id=\"field-1\" step=\"any\" value=\"1\"\/><\/div><div class=\"field has-term\" id=\"input-2\"><label for=\"field-2\">a\u2081\u2082<\/label><div class=\"term\">a12<\/div>  <div class=\"absolute bottom-0 left-16 top-8 w-2 h-0.5 bg-blue-500\"><\/div><input type=\"number\" name=\"a\" id=\"field-2\" step=\"any\" value=\"2\"\/><\/div><div class=\"field has-term\" id=\"input-3\"><label for=\"field-3\">a\u2081\u2083<\/label><div class=\"term\">a13<\/div>  <div class=\"absolute bottom-0 left-16 top-8 w-2 h-0.5 bg-blue-500\"><\/div><input type=\"number\" name=\"a\" id=\"field-3\" step=\"any\" value=\"3\"\/><\/div><div class=\"field has-term\" id=\"input-4\"><label for=\"field-4\">a\u2082\u2081<\/label><div class=\"term\">a21<\/div>  <div class=\"absolute bottom-0 left-16 top-8 w-2 h-0.5 bg-blue-500\"><\/div><input type=\"number\" name=\"a\" id=\"field-4\" step=\"any\" value=\"0\"\/><\/div><div class=\"field has-term\" id=\"input-5\"><label for=\"field-5\">a\u2082\u2082<\/label><div class=\"term\">a22<\/div>  <div class=\"absolute bottom-0 left-16 top-8 w-2 h-0.5 bg-blue-500\"><\/div><input type=\"number\" name=\"a\" id=\"field-5\" step=\"any\" value=\"1\"\/><\/div><div class=\"field has-term\" id=\"input-6\"><label for=\"field-6\">a\u2082\u2083<\/label><div class=\"term\">a23<\/div>  <div class=\"absolute bottom-0 left-16 top-8 w-2 h-0.5 bg-blue-500\"><\/div><input type=\"number\" name=\"a\" id=\"field-6\" step=\"any\" value=\"4\"\/><\/div><div class=\"field has-term\" id=\"input-7\"><label for=\"field-7\">a\u2083\u2081<\/label><div class=\"term\">a31<\/div>  <div class=\"absolute bottom-0 left-16 top-8 w-2 h-0.5 bg-blue-500\"><\/div><input type=\"number\" name=\"a\" id=\"field-7\" step=\"any\" value=\"5\"\/><\/div><div class=\"field has-term\" id=\"input-8\"><label for=\"field-8\">a\u2083\u2082<\/label><div class=\"term\">a32<\/div>  <div class=\"absolute bottom-0 left-16 top-8 w-2 h-0.5 bg-blue-500\"><\/div><input type=\"number\" name=\"a\" id=\"field-8\" step=\"any\" value=\"6\"\/><\/div><div class=\"field has-term\" id=\"input-9\"><label for=\"field-9\">a\u2083\u2083<\/label><div class=\"term\">a33<\/div>  <div class=\"absolute bottom-0 left-16 top-8 w-2 h-0.5 bg-blue-500\"><\/div><input type=\"number\" name=\"a\" id=\"field-9\" step=\"any\" value=\"0\"\/><\/div><\/fieldset><div class=\"buttons\"><button type=\"submit\" data-text=\"Recalculer\" id=\"calculate-button\" data-post=\"435\">Calculer<\/button><button type=\"reset\">R\u00e9initialiser<\/button><\/div><div class=\"field is-checkbox hidden!\" id=\"field-auto-calc\"><input type=\"checkbox\" id=\"auto-calc\"><label for=\"auto-calc\">Calculer automatiquement<\/label><small>Si activ\u00e9, le r\u00e9sultat se met \u00e0 jour automatiquement d\u00e8s que vous modifiez une valeur.<\/small><\/div><div class=\"fieldset-result is-hidden\" aria-labelledby=\"result-title\" aria-live=\"polite\" role=\"region\"> <h3 class=\"result-title bg-gradient-to-r from-primary-50 to-gray-50 dark:from-primary-900 dark:to-gray-800\" id=\"result-title\"><span class=\"icon icon-s-pulse\" aria-hidden=\"true\"><\/span> Vos r\u00e9sultats<\/h3><div class=\"result-box\"><div class=\"field-result\" id=\"output-1\"><span class=\"field-title\"><span>D\u00e9terminant |A|<\/span><\/span><span class=\"field-value\" id=\"result-1\"><\/span><button type=\"button\" class=\"copy-result\" data-tooltip=\"Copier le r\u00e9sultat\" aria-label=\"Copier le r\u00e9sultat\"><span class=\"copy-icon icon icon-document-copy\" aria-hidden=\"true\"><\/span><\/button><\/div><div class=\"field-result is-column\" id=\"output-2\"><span class=\"field-title\"><span>Matrice adjointe A*<\/span><\/span><span class=\"field-value\" id=\"result-2\"><\/span><button type=\"button\" class=\"copy-result\" data-tooltip=\"Copier le r\u00e9sultat\" aria-label=\"Copier le r\u00e9sultat\"><span class=\"copy-icon icon icon-document-copy\" aria-hidden=\"true\"><\/span><\/button><\/div><div class=\"field-result is-column\" id=\"output-3\"><span class=\"field-title\"><span>Matrice inverse A\u207b\u00b9<\/span><\/span><span class=\"field-value\" id=\"result-3\"><\/span><button type=\"button\" class=\"copy-result\" data-tooltip=\"Copier le r\u00e9sultat\" aria-label=\"Copier le r\u00e9sultat\"><span class=\"copy-icon icon icon-document-copy\" aria-hidden=\"true\"><\/span><\/button><\/div><\/div><div class=\"result-actions\"><button type=\"button\" class=\"copy-link\"><svg viewBox=\"0 0 20 20\" fill=\"currentColor\" aria-hidden=\"true\"><path d=\"M12.232 4.232a2.5 2.5 0 0 1 3.536 3.536l-1.225 1.224a.75.75 0 0 0 1.061 1.06l1.224-1.224a4 4 0 0 0-5.656-5.656l-3 3a4 4 0 0 0 .225 5.865.75.75 0 0 0 .977-1.138 2.5 2.5 0 0 1-.142-3.667l3-3Z\"\/><path d=\"M11.603 7.963a.75.75 0 0 0-.977 1.138 2.5 2.5 0 0 1 .142 3.667l-3 3a2.5 2.5 0 0 1-3.536-3.536l1.225-1.224a.75.75 0 0 0-1.061-1.06l-1.224 1.224a4 4 0 1 0 5.656 5.656l3-3a4 4 0 0 0-.225-5.865Z\"\/><\/svg><span class=\"copy-link__text\">Copier le lien vers ce calcul<\/span><\/button><span class=\"sr-only\" role=\"status\" id=\"copy-link-status\"><\/span><\/div><\/div><a href=\"#respond\" class=\"hidden transition-opacity duration-300 opacity-0 w-50 text-sm justify-center items-center gap-2 px-4 py-2 rounded bg-gray-200 text-gray-700 hover:bg-gray-300\" id=\"leave-comment\"><span class=\"icon icon-comments\" aria-hidden=\"true\"><\/span>Laisser un commentaire<\/a><\/form><\/section><section id=\"calc-reactions\" class=\"not-prose hidden my-12 bg-gradient-to-r from-primary-50 to-gray-50 border border-indigo-100 rounded-xl px-6 py-4 shadow-sm\" data-post=\"435\" aria-live=\"polite\" aria-labelledby=\"calc-reactions-title\"><p id=\"calc-reactions-title\" class=\"text-sm text-gray-500 text-center mb-2\">Que pensez-vous de ce r\u00e9sultat\u00a0?<\/p><div role=\"group\" aria-labelledby=\"calc-reactions-title\" class=\"grid grid-cols-3 sm:flex sm:flex-row sm:justify-around gap-4 sm:items-center sm:flex-wrap\"><button type=\"button\" aria-pressed=\"false\" class=\"reaction-btn flex flex-col items-center gap-1 text-sm text-gray-700 hover:text-primary-600 cursor-pointer transition-transform hover:scale-105\" data-reaction=\"like\"><span class=\"reaction-count\" data-reaction-count=\"like\">0<\/span><span class=\"reaction text-3xl\" aria-hidden=\"true\">\ud83d\ude00 <\/span><span class=\"reaction-description font-medium\">J\u2019aime <\/span><\/button><button type=\"button\" aria-pressed=\"false\" class=\"reaction-btn flex flex-col items-center gap-1 text-sm text-gray-700 hover:text-primary-600 cursor-pointer transition-transform hover:scale-105\" data-reaction=\"helpful\"><span class=\"reaction-count\" data-reaction-count=\"helpful\">0<\/span><span class=\"reaction text-3xl\" aria-hidden=\"true\">\ud83d\udca1 <\/span><span class=\"reaction-description font-medium\">Utile <\/span><\/button><button type=\"button\" aria-pressed=\"false\" class=\"reaction-btn flex flex-col items-center gap-1 text-sm text-gray-700 hover:text-primary-600 cursor-pointer transition-transform hover:scale-105\" data-reaction=\"confused\"><span class=\"reaction-count\" data-reaction-count=\"confused\">0<\/span><span class=\"reaction text-3xl\" aria-hidden=\"true\">\ud83d\ude15 <\/span><span class=\"reaction-description font-medium\">Confus <\/span><\/button><button type=\"button\" aria-pressed=\"false\" class=\"reaction-btn flex flex-col items-center gap-1 text-sm text-gray-700 hover:text-primary-600 cursor-pointer transition-transform hover:scale-105\" data-reaction=\"disappointed\"><span class=\"reaction-count\" data-reaction-count=\"disappointed\">0<\/span><span class=\"reaction text-3xl\" aria-hidden=\"true\">\ud83d\ude1e <\/span><span class=\"reaction-description font-medium\">D\u00e9\u00e7u <\/span><\/button><button type=\"button\" aria-pressed=\"false\" class=\"reaction-btn flex flex-col items-center gap-1 text-sm text-gray-700 hover:text-primary-600 cursor-pointer transition-transform hover:scale-105\" data-reaction=\"inaccurate\"><span class=\"reaction-count\" data-reaction-count=\"inaccurate\">0<\/span><span class=\"reaction text-3xl\" aria-hidden=\"true\">\u274c <\/span><span class=\"reaction-description font-medium\">Inexact <\/span><\/button><\/div><div id=\"reaction-message\" class=\"hidden mt-8 rounded-md border border-primary-100 bg-white\/50 backdrop-blur-sm px-4 py-2 text-sm text-center shadow-sm\"><\/div><\/section><div class=\"calcdash-ad not-prose calcdash-ad--calc_result calcdash-ad--in-article\"><ins class=\"adsbygoogle\" style=\"display:block\" data-ad-client=\"ca-pub-1721569815777345\" data-ad-slot=\"6317458308\" data-ad-layout=\"in-article\" data-ad-format=\"fluid\"><\/ins><script>(adsbygoogle = window.adsbygoogle || []).push({});<\/script><\/div>\n<style id=\"wpcoderpro-inline-1\">.formula-box {\r\n\tborder-bottom: none !important;\r\n}<\/style><section class=\"formula-box\" aria-labelledby=\"formula-title\">\r\n\t<div id=\"formula-title\" class=\"not-prose font-display mb-4\"><span class=\"icon icon-formula\" aria-hidden=\"true\"><\/span><h2>Formule de l\u2019inverse d\u2019une matrice 3\u00d73<\/h2><\/div>\r\n\t<figure class=\"not-prose formula\">\r\n\t\t<figcaption class=\"formula-title\">Formule<\/figcaption>\r\n\t\t<div class=\"text-base text-gray-800\" id=\"formula\">\n\\[ A^{-1} = \\frac{1}{\\det(A)} \\operatorname{adj}(A) \\]\n<\/div>\r\n\t<\/figure>\r\n\t<\/p>\n<p><strong>O\u00f9&nbsp;:<\/strong><\/p>\n<ul>\n<li>\\(A\\) \u2014 la matrice 3\u00d73 dont on calcule l\u2019inverse<\/li>\n<li>\\(\\det(A)\\) \u2014 le d\u00e9terminant de \\(A\\)<\/li>\n<li>\\(\\operatorname{adj}(A)\\) \u2014 la comatrice, c\u2019est-\u00e0-dire la transpos\u00e9e de la matrice des cofacteurs<\/li>\n<\/ul>\n<p>La matrice \\(A\\) est inversible uniquement si \\(\\det(A) \\neq 0\\). Si son d\u00e9terminant est nul, elle n\u2019a pas d\u2019inverse et est dite singuli\u00e8re.<\/p>\n<p>\r\n<\/section>\n<style id=\"wpcoderpro-inline-2\">.calculation-box {\r\n\tborder-bottom: none !important;\r\n}<\/style><section id=\"calculation\" class=\"calculation-box\" aria-labelledby=\"calculation-title\">\r\n\t<div id=\"calculation-title\" class=\"not-prose font-display\"><span class=\"icon icon-unordered-list\" aria-hidden=\"true\"><\/span><h2>Inverse d\u2019une matrice 3\u00d73 \u2013 Exemple de calcul<\/h2><\/div>\r\n\r\n<\/p>\n<p><strong>Exemple&nbsp;:<\/strong> calculons l\u2019inverse de la matrice \\( A = \\begin{bmatrix} 1 &amp; 2 &amp; 3 \\\\ 0 &amp; 1 &amp; 4 \\\\ 5 &amp; 6 &amp; 0 \\end{bmatrix} \\) (les valeurs par d\u00e9faut du calculateur).<\/p>\n<p>\\[ \\det(A) = 1(1 \\cdot 0 - 4 \\cdot 6) - 2(0 \\cdot 0 - 4 \\cdot 5) + 3(0 \\cdot 6 - 1 \\cdot 5) = -24 + 40 - 15 = 1 \\]<\/p>\n<p>Puisque \\(\\det(A) = 1 \\neq 0\\), l\u2019inverse existe. La matrice des cofacteurs est<\/p>\n<p>\\[ C = \\begin{bmatrix} -24 &amp; 18 &amp; 5 \\\\ 20 &amp; -15 &amp; -4 \\\\ -5 &amp; 4 &amp; 1 \\end{bmatrix} \\]<\/p>\n<p>et, comme la matrice des cofacteurs est d\u00e9j\u00e0 sym\u00e9trique ici, \\(\\operatorname{adj}(A) = C\\). Par cons\u00e9quent,<\/p>\n<p>\\[ A^{-1} = \\frac{1}{1}\\operatorname{adj}(A) = \\begin{bmatrix} -24 &amp; 18 &amp; 5 \\\\ 20 &amp; -15 &amp; -4 \\\\ -5 &amp; 4 &amp; 1 \\end{bmatrix} \\]<\/p>\n<p><strong>R\u00e9sultat&nbsp;:<\/strong> \\( A^{-1} = \\begin{bmatrix} -24 &amp; 18 &amp; 5 \\\\ 20 &amp; -15 &amp; -4 \\\\ -5 &amp; 4 &amp; 1 \\end{bmatrix} \\). Vous pouvez le v\u00e9rifier : \\(A \\cdot A^{-1} = I\\).<\/p>\n<p>\n\r\n<\/section>\n<h2>Comment utiliser le calculateur d\u2019inverse de matrice 3\u00d73<\/h2>\n<ol>\n<li>Saisissez les neuf \u00e9l\u00e9ments de votre matrice dans les champs a\u2081\u2081 \u00e0 a\u2083\u2083. Les indices indiquent la position : a\u2081\u2081 correspond \u00e0 la ligne 1, colonne 1&nbsp;; a\u2082\u2083 \u00e0 la ligne 2, colonne 3, et ainsi de suite.<\/li>\n<li>V\u00e9rifiez que vous avez rempli tous les champs&nbsp;: n\u2019en laissez aucun vide.<\/li>\n<li>Consultez les r\u00e9sultats : le calculateur affiche le <strong>d\u00e9terminant |A|<\/strong>, la <strong>comatrice A*<\/strong> et la <strong>matrice inverse A\u207b\u00b9<\/strong>.<\/li>\n<li>Si le d\u00e9terminant est nul, le calculateur indique que la matrice n\u2019est pas inversible et qu\u2019il n\u2019y a rien d\u2019autre \u00e0 calculer.<\/li>\n<\/ol>\n<h2>Qu\u2019est-ce que l\u2019inverse d\u2019une matrice&nbsp;?<\/h2>\n<p>L\u2019inverse d\u2019une matrice carr\u00e9e \\(A\\) est la matrice \\(A^{-1}\\) qui v\u00e9rifie \\(A \\cdot A^{-1} = A^{-1} \\cdot A = I\\), o\u00f9 \\(I\\) est la matrice identit\u00e9 (des 1 sur la diagonale et des 0 partout ailleurs). Multiplier une matrice par son inverse revient, pour les matrices, \u00e0 diviser un nombre par lui-m\u00eame : cela \u00ab&nbsp;annule&nbsp;\u00bb la transformation ou l\u2019op\u00e9ration repr\u00e9sent\u00e9e par \\(A\\).<\/p>\n<p>Pour une matrice 3\u00d73, la m\u00e9thode habituelle de calcul \u00e0 la main est la <strong>m\u00e9thode de la comatrice<\/strong> : calculer le d\u00e9terminant, former la matrice des cofacteurs, la transposer pour obtenir la comatrice, puis diviser par le d\u00e9terminant. C\u2019est exactement ce que fait le calculateur, rapidement et sans erreurs de signe, qui sont les plus fr\u00e9quentes lorsqu\u2019on calcule les cofacteurs \u00e0 la main.<\/p>\n<p>Les inverses de matrices sont importants, car de nombreux probl\u00e8mes reviennent \u00e0 r\u00e9soudre \\(A\\mathbf{x} = \\mathbf{b}\\) pour trouver \\(\\mathbf{x}\\). Lorsque \\(A\\) est inversible, la solution est simplement \\(\\mathbf{x} = A^{-1}\\mathbf{b}\\). Les inverses interviennent dans la r\u00e9solution de syst\u00e8mes lin\u00e9aires, l\u2019inversion de transformations g\u00e9om\u00e9triques en infographie, l\u2019analyse de r\u00e9seaux \u00e9lectriques et de nombreuses m\u00e9thodes num\u00e9riques. Si vous souhaitez ensuite multiplier le r\u00e9sultat par une autre matrice, notre calculateur de <a href=\"https:\/\/wpcalc.com\/fr\/mathematiques\/multiplication-matrices\/\">multiplication de matrices<\/a> peut le faire pour vous.<\/p>\n<h2>Interpr\u00e9ter le r\u00e9sultat<\/h2>\n<p>Le calculateur fournit trois r\u00e9sultats dans l\u2019ordre. D\u2019abord, le <strong>d\u00e9terminant<\/strong>&nbsp;: s\u2019il est nul, la matrice est singuli\u00e8re et le calcul s\u2019arr\u00eate, car il n\u2019existe pas d\u2019inverse. Ensuite, la <strong>comatrice<\/strong>, r\u00e9sultat interm\u00e9diaire avant la division par le d\u00e9terminant. Enfin, la <strong>matrice inverse<\/strong>, dont chaque \u00e9l\u00e9ment est obtenu en divisant l\u2019\u00e9l\u00e9ment correspondant de la comatrice par le d\u00e9terminant (avec un arrondi \u00e0 quatre d\u00e9cimales).<\/p>\n<p>Pour v\u00e9rifier la coh\u00e9rence du r\u00e9sultat, on peut utiliser les propri\u00e9t\u00e9s \\(\\det(A^{-1}) = 1\/\\det(A)\\) et \\(A \\cdot A^{-1} = I\\). Si votre application fait intervenir les valeurs propres ou le rang d\u2019une matrice, vous pouvez poursuivre avec nos calculateurs de <a href=\"https:\/\/wpcalc.com\/fr\/mathematiques\/valeurs-propres-vecteurs-propres-3x3\/\">valeurs propres et vecteurs propres d\u2019une matrice 3\u00d73<\/a> ou de <a href=\"https:\/\/wpcalc.com\/fr\/mathematiques\/rang-matrice-3x3\/\">rang d\u2019une matrice 3\u00d73<\/a>.<\/p>\n<h2>Hypoth\u00e8ses, limites et conseils<\/h2>\n<ul>\n<li><strong>Matrices carr\u00e9es uniquement.<\/strong> Seules les matrices carr\u00e9es peuvent avoir un inverse, et ce calculateur traite exclusivement les matrices 3\u00d73.<\/li>\n<li><strong>Singularit\u00e9.<\/strong> Un d\u00e9terminant nul signifie que la matrice projette l\u2019espace sur un sous-espace de dimension inf\u00e9rieure : de l\u2019information est perdue et l\u2019op\u00e9ration ne peut pas \u00eatre invers\u00e9e.<\/li>\n<li><strong>Arrondi.<\/strong> Les \u00e9l\u00e9ments de l\u2019inverse sont affich\u00e9s avec un arrondi \u00e0 quatre d\u00e9cimales ; les valeurs sous-jacentes peuvent \u00eatre des d\u00e9veloppements d\u00e9cimaux p\u00e9riodiques ou des fractions telles que \\(1\/3\\).<\/li>\n<li><strong>Prudence num\u00e9rique.<\/strong> Un d\u00e9terminant tr\u00e8s petit, mais non nul, signifie que la matrice est presque singuli\u00e8re. Les \u00e9l\u00e9ments de son inverse sont alors tr\u00e8s grands et de petites erreurs dans les donn\u00e9es saisies peuvent fortement fausser le r\u00e9sultat \u2014 un probl\u00e8me fr\u00e9quent dans les applications concr\u00e8tes.<\/li>\n<li><strong>Conseil de v\u00e9rification.<\/strong> Apr\u00e8s avoir calcul\u00e9 un inverse \u00e0 la main, effectuez mentalement la multiplication \\(A \\cdot A^{-1}\\) pour une ligne ou une colonne : vous devez obtenir 1 sur la diagonale et 0 ailleurs.<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Saisissez les neuf \u00e9l\u00e9ments d\u2019une matrice 3\u00d73 pour trouver son inverse, son d\u00e9terminant et sa comatrice. Le calculateur utilise la m\u00e9thode des cofacteurs et vous indique si la matrice est singuli\u00e8re.<\/p>\n","protected":false},"author":3168,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[2],"tags":[24],"class_list":["post-435","post","type-post","status-publish","format-standard","hentry","category-mathematiques","tag-matrices"],"acf":[],"_links":{"self":[{"href":"https:\/\/wpcalc.com\/fr\/wp-json\/wp\/v2\/posts\/435","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wpcalc.com\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/wpcalc.com\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/wpcalc.com\/fr\/wp-json\/wp\/v2\/users\/3168"}],"replies":[{"embeddable":true,"href":"https:\/\/wpcalc.com\/fr\/wp-json\/wp\/v2\/comments?post=435"}],"version-history":[{"count":6,"href":"https:\/\/wpcalc.com\/fr\/wp-json\/wp\/v2\/posts\/435\/revisions"}],"predecessor-version":[{"id":4903,"href":"https:\/\/wpcalc.com\/fr\/wp-json\/wp\/v2\/posts\/435\/revisions\/4903"}],"wp:attachment":[{"href":"https:\/\/wpcalc.com\/fr\/wp-json\/wp\/v2\/media?parent=435"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/wpcalc.com\/fr\/wp-json\/wp\/v2\/categories?post=435"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/wpcalc.com\/fr\/wp-json\/wp\/v2\/tags?post=435"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}