If `A, B` and `A + B` are idempotent matrices, then

If A,B,A + I,A + B are idempotent matrics, then a)AB + BA = O b)AB = BA c)A + B = O d)None of these

If A ,B ,A+I ,A+B are idempotent matrices, then A B is equal to

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 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

Statement -1 (Assertion) and Statement - 2 (Reason) Each of these examples also has four alternative choices, ONLY ONE of which is the correct answer. You have to select the correct choice as given below Statement-1 If A and B are two matrices such that AB = B, BA = A, then A^(2) + B^(2) = A+B. Statement-2 A and B are idempotent matrices, then A^(2) = A, B^(2) = B .

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

If A and B are invertible matrices , then:

If A and B are symmetric matrices then

If A,B are two idempotent matrices and AB=BA=O then A+B is