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

IF A={:[(1,2),(4,2):}] , find |2A|.

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

If A'=[(-2,3),(1,2)] and B=[(-1,0),(1,2)] then find (A+2B)'

If A=[(1,-2,3),(-4,2,5)] and B=[(2,3),(4,5),(2,1)] , then find AB, BA. Show that AB ne BA .

If A=[(1,2,3),(2,3,1)] and B=[(3,-1,3),(-1,0,2)] , then find 2A-B .

A = [(4,3),(2,1)] Find A+A'.

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

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

For the matrix A={:[( 3,2),( -1,2) ]:} . Find the numbers a and b such that A^(2) +aA+bI =O.