Test the inverse formula of Theorem 8 for a random 4 X 4 matrix A. Use your matrix program to compute the cofactors of the 3 X 3 submatrices, construct the adjugate, and set B = (adj A)/(det A). Then compute B - inv(A), where inv(A) is the inverse of A as computed by the matrix program. Use floating point arithmetic with the maximum possible number of decimal places. Report your results.