P -6 6
1 0 2
Matrix A= -1 4 -1 and B = 1 4 1
6 3 -3
3 3 2
(a) Given AB=91, where I is a 3 x 3
identity matrix, find the values
of p and q.
(b) Hence deduce B-1.
(c) Find matrix C if CHAT+AB