Question

Find the matrix representing the relation S•R where the matrices representing R and S are
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Answer 1

Answer:

I am having difficulty understanding the following:

Find the matrix representing the relations S∘R, where the matrices representing R and S:

MR=⎡⎣⎢1 0 11 1 00 0 0⎤⎦⎥ and MC=⎡⎣⎢0 1 00 0 11 0 1⎤⎦⎥⟹MR⊙MS⟹⎡⎣⎢1 1 10 1 10 0 0⎤⎦⎥

I know that if the composite matrix has tij=1 if and only if rik=skj=1 for some k. I am unsure how to arrive at the answer to the right.