If `A ,B ,A+I ,A+B` are idempotent matrices, then `A B` is equal to a.`B A` b. `-B A` c. `I` d. `O`

If A ,B ,A+I ,A+B are idempotent matrices, then A B is equal to B A b. -B A c. I d. O

If B is an idempotent matrix, and A=I-B , then

If A and B are square matrices of same order, then (A+B) (A-B) is equal to

If B is an idempotent matrix, and A=I-B , then a. A^2=A b. A^2=I c. A B=O d. B A=O

If A and B are two matrices such that A B=A and B A=B , then B^2 is equal to (a) B (b) A (c) 1 (d) 0

If A and B are two matrices such that AB=A, BA=B, then A^25 is equal to (A) A^-1 (B) A (C) B^-1 (D) B

Let A and b are two square idempotent matrices such that ABpm BA is a null matrix, the value of det (A - B) cann vbe equal

If A and B are square matrices of the same order, then (A+B)(A-B) is equal to A^2-B^2 (b) A^2-B A-A B-B^2 (c) A^2-B^2+B A-A B (d) A^2-B A+B^2+A B

If A and B are two square matrices such that B=-A^(-1)BA , then (A+B)^(2) is equal to

If A and B are symmetric matrices, then show that A B is symmetric if A B=B A i.e. A and B commute.