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\[ \begin{pmatrix} a_{11} & \cdots & a_{1n} \\ \vdots & \ddots & \vdots \\ a_{n1} & \cdots & a_{nn} \end{pmatrix} \cdot \begin{pmatrix} v_1 \\ \vdots \\ v_n \end{pmatrix} = \begin{pmatrix} \sum_{i=1}^n a_{1 i} v_i \\ \vdots \\ \sum_{i=1}^n a_{n i} v_i \end{pmatrix} \]
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Wed, 30 Dec 2020 15:31 GMT