Question
Asked Sep 25, 2019
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Suppose matrix A is m×n and B is n×p. If the first row of matrix A is all zeros, what can you say about the first row of AB? Explain.

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Expert Answer

Step 1

Explanation:

Since matrix A is m×n and matrix B is n×p, the matrix AB will be m×p.

In order to get the first element in the first row of matrix AB, multiply the first row of A with the first column of B.

Since the first row of A is all 0, the first element in the first row of matrix AB will be 0.

Similarly, ...

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