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0 0 0  1 1 1 2 matrices suivantes :  2   3  ,  1   1  1   7    0 .   1   4 Exercice 3 : Résoudre dans R les systèmes par la méthode du pivot de Gauss.       x − y + 3z = 6, 2x + 3y = 12,     (S2 ) : (S1 ) : 3x − 2y + 7z = 14, −3x + 5y = 1,        x + 3y − 3z = −4.  7x − 11y = −1,   2x + 3y + z = 4, −x + 6y + 2z = 5, Exercice 4 : Pour λ ∈ R, résoudre le système (Sλ ) :  7x + 3y + z = λ. Exercice 5 : Résoudre en fonction du paramètre m ∈ C, les systèmes suivants

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:  2   3  ,  1   1  1   7    0 .   1   4 Exercice 3 : Résoudre dans R les systèmes par la méthode du pivot de Gauss.    x − y + 3z = 6,  2x + 3y = 12,       (S2 ) : (S1 ) : 3x − 2y + 7z = 14, −3x + 5y = 1,        x + 3y − 3z = −4.  7x − 11y = −1,   2x + 3y + z = 4, −x + 6y + 2z = 5, Exercice 4 : Pour λ ∈ R, résoudre le système (Sλ ) :  7x + 3y + z = λ. Exercice 5 : Résoudre en fonction du paramètre m ∈ C

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