Question: Suppose a and b are column vectors with components all ... , am and b1 , . . . , bp. Can you multiply a

Suppose a and b are column vectors with components all ... , am and b1 , . . . , bp. Can you multiply a times b^T (yes or no) ? What is the shape of the answer ab^T ? What number is in row i, column j of ab^T ? What can you say about aa^T ?

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