Given A = [2+m 1 -1] and B = [-1-m 2 9]
[3 2 4] [ 3 5+m 3]
[1 -1 5+m] [0+m 6 1]
Find the following: a. (AB)^T - A (using Excel) b. |4A^-1 + 2B^-1| (using Excel) c. 2AB-1 (using MATLAB)