If A and B are invertible matrices, then which of the following is not correct?
A. adj A = |A|.A-1
B. det (a)-1 = [det (a)]-1
C. (AB)-1 = B-1A-1
D. (A + B)-1 = B-1 + A-1
Answer:A
If A and B are invertible matrices, then which of the following is not correct?
A. adj A = |A|.A-1 B. det (a)-1 = [det (a)]-1 C. (AB)-1 = B-1A-1 D. (A + B)-1 = B-1 + A-1