Let `{:A=[(1,2),(3,4)]and BA=[(a,0),(0,b)]:},a,b in N` Then,

Let {:A=[(1,2),(3,4)]and B=[(a,0),(0,b)]:},a,b in N Then,

Let A = ((1,2),(3,4)) and B = ((a,0),(0,b)), a b in N . Then :

Let ((1,2),(3,4)) and B=((a,0),(0,b)), a, b epsilon N . Then

Let A=[(2,3),(5,7)] and B=[(a, 0), (0, b)] where a, b in N . The number of matrices B such that AB=BA , is equal to

Let A=[(2,3),(5,7)] and B=[(a, 0), (0, b)] where a, b in N . The number of matrices B such that AB=BA , is equal to

Let A=([1,23,4]) and B=([a,00,b]),a,b in N) Then,(a) there cannot exist any B such that AB=BA

Let A={:((1,2),(3,4):}) and B={:((a,0),(0,b)):} , where a,b in N , then

Let A = [(1,3,2),(0,1,4)] and B = [(1,4),(0,1),(2,3)] . Show that AB ne BA

Let A={:[(1,2),(3,4)]:},B={:[(-1,-2),(-4,-3)]:} , find AB and BA.