Question: Let where M are K - by - 1 column vectors. What is true about where is M - by - 1 ? Group of

Let
where
M are K-by-1 column vectors.
What is true about
where
is M-by-1?
Group of answer choices
is a row vector
is a weighted sum of the rows of
is a weighted sum of the columns of
none of the other choices are true

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