Exercice 9. On considère (Sm) le système linéaire suivant : (Sm) x+y-z = 1 x+2y+mz = 2 2x+my+22 = 3 mЄR 1. Donner l'écriture matricielle du système linéaire (SM). 2. Pour quelles valeurs de m le système linéaire (Sm) est-il de Cramer ? 3. On pose m = -2. Résoudre le système linéaire (S-2) par la méthode de Gauss. 4. On pose m = 3. Résoudre le système linéaire (53) par la méthode de Gauss. 5. On pose m = 0. Résoudre le système linéaire (So) en utilisant la matrice inverse. 6. Déterminer suivant les valeurs de m le nombre de solutions du système homogène suivant : (il n'est pas demandé de calculer les solutions) x+y-z = 0 (Sm) x + 2y +mz 2x +my+2z =0 = 0 mЄR

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A: As per our guidelines I am solving only first problem please repost other question.  9. A' after AB…

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