a) Here the number of columns of A = 4 and the number of rows of B = 4.
Since the number of columns of A is equal to the number of rows of B, therefore the matrix C = AB exists.
Now, expresion for the product matrix C = AB is :
where i = 1,2,3 and k = 1,2,3.
b) Here the number of columns of B = 3 and the number of rows of A = 3.
Since the number of columns of B is equal to the number of rows of A, therefore the matrix D = BA exists.
Now, expresion for the product matrix D = BA is :
where i = 1,2,3,4 and k = 1,2,3,4.
Thank you...
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