Question

If A is an 3 × 3 non-singular matrix such that AA' = A'A and B = A⁻¹A', then BB' equals:(a) B⁻¹(b) (B⁻¹)'(c) I + B(d) I

Answer 1

A is an 3 × 3 non-singular matrix such that AA' = A'A and B = A⁻¹A', then BB' equals:(a) B⁻¹(b) (B⁻¹)'(c) I + B(d) I