" If "A,B,A+I,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 and A+B are idempotent matrices, then

A square matrix A is used to be an idempotent matrix if A^(2) = A . If A, B and A + B are idempotent matrices, then-

If A!=I is an idempotent matrix, then A is a

If B an idempotent matrix and A=I-B then AB =

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

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

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

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

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