If `A=[[2,5,3],[3,1,2],[1,2,1]]` ,then `A^(-1)` is equal to

If A=[(-2,3),(-1,1)] then A^(3) is equal to

(1+2i)/(1+3i) is equal to

If A=[(2,3),(5,-2)] then 19A^-1 is equal to (A) A\' (B) 2A (C) 1/2 A (D) A

Let f(z) = |(5,3,8),(2,z,1),(1,2,z)| then f(5) is equal to

Let A=[(-1,2,-3),(-2,0,3),(3,-3,1)] be a mstrix, then |A|adj(A^(-1)) is equal to

If A=[[0 ,1 ,3],[ 1, 2,x],[2, 3, 1]] and A^(-1)=[[1//2,-4 ,5//2],[-1//2, 3,-3//2],[ 1//2,y,1//2]] ,find x ,\ y .

[[1,-1,1],[2,-3,2],[1,3,-1]][[x],[y],[z]]=[[1],[-1],[1]] ,then [[x],[y],[z]] is equal to

tan^(-1)(1/2)+tan^(-1)(1/3) is equal to

Let A +2B=[[1, 2, 0],[ 6,-3, 3],[-5, 3, 1] ] and 2A-B=[[2,-1, 5 ],[2,-1, 6],[ 0, 1, 2]] . Then T r(B) has the value equal to a. 0 b. 1 c. 2 d. none

If A={:[(1,2,3),(-2,5,7)]:}and2A-3B={:[(4,5,-9),(1,2,3)]:} then B is equal to