Question 30

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–1 A–1
• (D)(A + B)–1 = B–1 + A–1 1+ x 1 1