If `A=[(2,-1),(3,4)]` find `|(A^(-1))^(-1)|`

If A = [(2,1),(3,4)] and B = [(1,-2),(-1,1)] , find the value of (AB)^(-1) .

If A=[{:(1,2),(3,4):}] then find A+A .

If A = [(2,-1,3),(1,3,2),(3,-4,-1)] , find A^-1 , Using A^-1 , solve the following system of linear equations 2x - y + 3z = 13, x + 3y + 2z = 1, 3x - 4y - z = 8 .

If A = [(-2,1,0),(3,4,-5)] and B = [(1,-2),(4,3),(-1,5)] then find A + B^T .

If A=[{:(2,-1),(3,4),(1,5):}]" and "B=[{:(-1,3),(2,1):}] , find AB. Does BA exist?

If A = [(1,1,-2),(2,1,-3),(5,4,-9)] find |A| .

If A = [(2,4, -1), (-1,0,2)], B = [(3,4),(-1,2),(2,1)] . Find (AB)'

IF A=[{:(-2,1,0),(3,4,-5):}] and B=[{:(1,2),(4,3),(-1,5):}] then find A+B'.

Find (AB)^(-1) if A=[(3,4),(1,1)] ,B^(-1)=[(4,3),(2,1)]