Question 334232
[A]={{{(matrix(3,3,1,-1,1,4,-1,2,2,-3,2))}}}
[x]={{{(matrix(3,1,x,y,z))}}}
[b]={{{(matrix(3,1,-2,-3,-7))}}}
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[A][x]=[b]
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[x]=[A]inv[b]
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det[A]={{{-2}}}
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[A]inv={{{(1/2)*(matrix(3,3,4,-1,-1,-4,0,2,-10,1,3))}}}
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[x]={{{(matrix(3,1,-1,3,2))}}}