Page No 80:
Question 1:
Let 
Find each of the following
(i) 
(ii) 
(iii) 
(iv) 
(v) 
(i)
(ii)
(iii)
(iv) Matrix A has 2 columns. This number is equal to the number of rows in matrix B. Therefore, AB is defined as:
(v) Matrix B has 2 columns. This number is equal to the number of rows in matrix A. Therefore, BA is defined as:
