MathAlgebraLinear algebraMatrices

Matrix multiplication

Theory

The dot product

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What is the dot product of the 2nd row and the 1st column equal to?

(111222)⋅(343434)\begin{pmatrix}1 & 1 & 1 \\ 2 & 2 & 2 \end{pmatrix} \cdot \begin{pmatrix} 3 & 4 \\ 3 & 4 \\ 3 & 4 \end{pmatrix}

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