Consider the following in respect of two non-singular matrices A and B of same order:1.det(A+B)=detA+detB2.(A+B)−1=A−1+B−1Which of the above is/are correct?
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
is an invertible matrix of order 2, then det (A−1)
is equal to
(A) B. C. 1 D. 0