Given the matrices A and B Compute A B without computing A

Last updated: 6/29/2023

Given the matrices A and B Compute A B without computing A Hint A B is the solution of the equation Ar B A 138 2 4 11 and B 125 35 1 5 3 4 Suppose an n x n matrix A satisfies the equation A2 2A I 0 Show that A 3A 21