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2. Create two random matrices A and B each of size n x n. Write a computer program to compute a) D(i, j) = A(i, j) * B(i, j) for i=1 ... n and j=1 ... n, and b) D(i, j) = R=1(A(i, k) * B(k,j)) for i=1 ... n and j = 1 ... n. Use a timing function to report the execution time for the two computations using single and then double precisions. Report on the execution time of each run. Try n= 100 and 1000. c) repeat the calculations in (a) and (b) above using Matlab