Compute the products AB and BA whichever exists in each of the following cases:
and 
here, 
since the order of A is 3
2 and order of B is 2
3,
AB and BA both exit and order of AB = 3
3 and order of BA = 2
2
Hence
,
3
Compute the products AB and BA whichever exists in each of the following cases:
and
here,
since the order of A is 32 and order of B is 23,
AB and BA both exit and order of AB = 33 and order of BA = 22
Hence
,