EM-2123

Matrix multiplication

E Math · Secondary 4 · Medium · Matrix multiplication

Matrix

A=\begin{pmatrix}2&3\\4&1\end{pmatrix}

and matrix

B=\begin{pmatrix}5\\-2\end{pmatrix}

.
Find the matrix product

AB

.

$\begin{pmatrix}4\\18\end{pmatrix}$
$\begin{pmatrix}16\\22\end{pmatrix}$
$\begin{pmatrix}10\\20\end{pmatrix}$
$\begin{pmatrix}1\\-7\end{pmatrix}$

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