If `A|(1, 4, 7),( 2, 6, 5),( 3,-1, 2)|a n dB=d i ag(1,2,5)` , then trace of a matrix `A B^2` is

If A=[[1 ,-3, 4], [7, 2 ,5],[ -2,6, 3]] a n d B=d i ag(2,3,5) , then trace of matrix A B^2 is (a)74 (b)75 (c)97 (d)23

If A=[1 4 7 2 6 5 3-1 2] a n d B=d i ag(125) , then trace of matrix A B^2 is (a)74 (b)75 (c)529 (d)23

If A=[[-2,3,8],[1,5,5],[0,2,4]], then trace of matrix A is

If A = { 1,2,3,4 }, B = { 2, 4, 5,6 } , U = { 1,2,3,4,5,6,7} then A' ∩ B'

If A=d i ag(1-1 2) and B=d i ag(2 , 3 -1), find A+B ,3A+4Bdot

Let A+2B=[{:(2,4,0),(6,-3,3),(-5,3,5):}] and 2A-B=[{:(6,-2,4),(6,1,5),(6,3,4):}] , then tr (A) - tr (B) is equal to (where , tr (A) =n trace of matrix x A i.e. . Sum of the principle diagonal elements of matrix A)

Let A+2B=[{:(2,4,0),(6,-3,3),(-5,3,5):}] and 2A-B=[{:(6,-2,4),(6,1,5),(6,3,4):}] , then tr (A) - tr (B) is equal to (where , tr (A) =n trace of matrix x A i.e. . Sum of the principle diagonal elements of matrix A)

If A=[(1,4),(3,2),(2,5)], B=[(-1,-2),(0,5),(3,1)] , find the matrix D such that A+B-D=0 .