The basic definition of matrix multiplication A B tells us to multiply rows of A times columns
Question:
AB = c1r1+c2r2 +------+cnrn. (1.14)
where each summand is a matrix of size m à p.
(a) Verify the particular case
does agree with the usual method for computing the matrix product.
(b) Use this method to compute the matrix products
(i)
(ii)
(iii)
and verify that you get the same answer as the traditional method.
(c) Explain why (1.13) is a special case of (1.14).
(d) Prove that (1.14) gives the correct formula for the matrix product.
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