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OpenStudy (anonymous):
PLEASE HELP Tell whether the product AB is defined for A4×5 and B5×3. If yes, enter the product's dimensions like this example: 2x3. If not, write NO in the space provided.
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OpenStudy (anonymous):
This is matrix algebra, right? If so, if A is mXr and B is rXn, AB is defined and results in an mXn matrix.
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