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    Matrix Proof: Determinants

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

    Help:
    : is the determinant A

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

    © BrainMass Inc. brainmass.com March 4, 2021, 5:49 pm ad1c9bdddf
    https://brainmass.com/math/matrices/matrix-proof-determinants-12701

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    Solution Summary

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

    $2.19

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