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10 Nov 2019

1.Solve the system by inverting the coefficient matrix and using the theorem " If A is an invertible nxn matrix,then for each nx1 matrix b, the system of equations Ax=b has exactly one solution, namely, X=A(inverse sign)b"

-x-2y-3z=0

w+x+4y+4z=7

w+3x+7y+9z=4

-w-2x-4y-6z=6

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Sixta Kovacek
Sixta KovacekLv2
5 Oct 2019

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