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    Matrix Proof: Determinants

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    1. Show that if   0, then A^-1=1/ [ d -b ]
    [ -c a ] .

    : is the determinant A

    [ d -b]
    [ -c a ] : is a 2 x 2 matrices

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    Solution Summary

    A proof for a matrix determinant is provided. The solution is detailed and well presented.