If
and 
find (i) AB (ii)
BA.Is the group of 2x2 matrices under matrix multiplication commutative? Give a reason for your answer.
Answer.
QUESTION
If
and
find (i) AB (ii)
BA.
Is the group of 2x2 matrices under matrix multiplication commutative? Give
a reason for your answer.
Answer.
ANSWER
(i) 
(ii) 
The group of 2x2 matrices is not commutative under matrix
multiplication since, above, 
.