Let `A=[(-4, -3, -3),(1, a, 1),(4, b, 3)] and A=A^(-1)`, then `a+2b` is equal to

If A = [{:(1),(-4),(3):}] and B = [-1, 2, 1], then (AB)' is equal to

Let A={:[(2,3,5),(1,0,2),(3,4,5)]:}andA+B-4I=0 , then B is equal to

Let A={:[(2,3,5),(1,0,2),(3,4,5)]:}andA+B-4I=0 , then B is equal to

Let A+B = [(4,1,4),(1,4,4)] and B = [ (1,0,-2),(-1,3,0)] then A =

Let X=[{:(x_(1)),(x_(2)),(x_(3)):}],A=[{:(1,-1,2),(2,0,1),(3,2,1):}] and B=[{:(3),(1),(4):}] .If AX=B, then X is equal to: a) [(1),(2),(3)] b) [(-1),(2),(3)] c) [(-1),(-2),(3)] d) [(-1),(-2),(-3)]

Let X=[{:(x_(1)),(x_(2)),(x_(3)):}],A=[{:(1,-1,2),(2,0,1),(3,2,1):}] and B=[{:(3),(1),(4):}] .If AX=B, then X is equal to

If A=[(2, -3, -5) , (-1, 4, 5), (1, -3, -4)] and B=[(2, -2, -4) , (-1, 3, 4),( 1, -2, -3) ] , show that A B=A and B A=B .

Let A and B are two matrices of same order i.e. where A=[(1,-3,2),(2,K,5),(4,2,1)], B=[(2,1,3),(4,2,4),(3,3,5)] If C = A – B and tr (C) = 0 then K is equal to-

If A = [{:(1,1,2),(1,3,4),(1,-1,3):}] , B = adj A and C = 3A then (|adjB|)/(|C |) is equal to