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Hello,
Just testing. A←mat(a11,a12,a21,a22,2,2) invA←1/det(A)*mat(a22,-a12,-a21,a11,2,2) A^{-1}*A—mat({-a22*a11+a12*a21}/{a12*a21-a11*a22},0,0,1,2,2) A*A^{-1}—mat({-a22*a11+a12*a21}/{a12*a21-a11*a22},0,0,1,2,2) invA*A—mat({a22*a11-a12*a21}/{a11*a22-a21*a12},0,0,1,2,2) A*invA—mat({a22*a11-a21*a12}/{a11*a22-a21*a12},0,0,{-a12*a21+a11*a22}/{a11*a22-a21*a12},2,2) Is there any explanation of these results? Why we do not get simply just identity matrices?
Regards, Radovan |
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