EM-718

Scalar multiplication of matrices

E Math · Secondary 3 · Hard · Scalar multiplication of matrices

Given

N = \begin{pmatrix}-1 & 0 & 2\\3 & 4 & -2\end{pmatrix}

, find

-2N

.

$\begin{pmatrix}2 & 0 & -4\\-6 & -8 & 4\end{pmatrix}$
$\begin{pmatrix}-2 & 0 & 4\\6 & 8 & -4\end{pmatrix}$
$\begin{pmatrix}1 & 0 & -2\\-3 & -4 & 2\end{pmatrix}$
$\begin{pmatrix}-2 & 0 & -4\\-6 & -8 & -4\end{pmatrix}$

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