If AB = A and BA = B then 11A=20

If AB = A and BA = B then B'A'= A' and A'B' = B' and hence prove that A' and B' are idempotent.

If A and Bare square matrices of same order such that AB = A and BA = B, then AB^(2)+B^(2)= : a) AB b) A+B c) 2AB d) 2BA

If AB=A and BA=B, then B^2 =

If AB=A and BA=B then B^(2)=

If AB=A,BA=B then A^(2)+B^(2)=

Matrix A has m rows and n + 5 columns, matrix B has m rows and 11 - n columns, If both AB and BA exist, then a)AB and BA are square matrix b)AB and BA are of order 8 xx 8 and 3 xx 13 respectively. c)AB = BA d)None of these

Matrix A ha s m rows and n+ 5 columns; matrix B has m rows and 11 - n columns. If both AB and BA exist, then (A) AB and BA are square matrix (B) AB and BA are of order 8 xx 8 and 3 xx 13 , respectively (C) AB=BA (D) None of these

Matrix A ha s m rows and n+ 5 columns; matrix B has m rows and 11 - n columns. If both AB and BA exist, then (A) AB and BA are square matrix (B) AB and BA are of order 8 xx 8 and 3 xx 13, respectively (C) AB=BA (D) None of these

Matrix A ha s m rows and n+ 5 columns; matrix B has m rows and 11 - n columns. If both AB and BA exist, then (A) AB and BA are square matrix (B) AB and BA are of order 8 xx 8 and 3 xx 13 , respectively (C) AB=BA (D) None of these