Inverting a 3x3 matrix using determinants Part 1: Matrix of minors and cofactor matrix

SOLVED: Compute the determinant by cofactor expansion: At each step, choose a row or column that involves the least amount of computation.(Simplify your answer:)-3

Finding the Inverse of a 4x4 Matrix | Overview & Examples

SOLVED:Find the cofactor of each element in the second row of each matrix. See Example 2 . [ 1 2 -1 2 3 -2 -1 4 1]

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