If `A=[2 5 2 1]` and `B=[4-3 2 5]` , verify that `|A B|=|A||B|` .

If A = [{:(2,5),(2,1):}] and B = [{:(4,-3),(2,5):}] ,verify that |AB|=|A||B|.

If A = [{:(2,5),(2,1):}] and B = [{:(4,-3),(2,5):}] , verify that |AB| = |A| |B| .

If A=[[3],[5],[2]] and B=[1,0,4] , verify that (AB)\'=B\'A\'

If A= [[-2],[4],[5]] , B=[1 3 -6] , verify that (AB)'=B'A'.

If A=[(-2),(4),(5)]andB=[(1,3,-6)], verify that (AB)'=B'A' .

If =[[-2],[4],[5]], B=[1,3,-5] , verify that (AB)\'=B\'A\'

If A=[(-2),(4),(5)],B=[(1,2,-3)] , verify that (AB)'=B'A' .

If A=[[-2],[4],[5]] and B=[[1,3,-6]] ,verify that (AB)'=B'A' .

If A=[[3],[2],[1]], B=[(1) (-2) (5)] then verify that (AB)'=B'A'.

Let A=[[1 ,1, 1],[ 3, 3, 3]] , B=[[3,1], [5, 2],[-2, 4]] and C=[[4,2],[-3,5],[ 5 ,0]] . Verify that A B=A C though B!=C ,\ A!=O .