Question: Inversion by Determinants Let A be a square matrix and let A be its cofactor matrix, the matrix obtained from A by replacing each of

Inversion by Determinants Let A be a square matrix and let A be its cofactor matrix, the matrix obtained from A by replacing each of its elements by its cofactor. Then if |A| ( 0.

Use this formula to compute the inverse of the matrix

Check your result by computing the inverse using row reduction?

021 121

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