EM-719

Scalar multiplication of matrices

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

Let

P = \begin{pmatrix}\frac{1}{2} & \frac{3}{2}\\0 & -1\end{pmatrix}

. Find

4P

.

$\begin{pmatrix}2 & 6\\0 & -4\end{pmatrix}$
$\begin{pmatrix}4 & 12\\0 & -4\end{pmatrix}$
$\begin{pmatrix}\frac{1}{8} & \frac{3}{8}\\0 & -4\end{pmatrix}$
$\begin{pmatrix}2 & 6\\0 & 4\end{pmatrix}$

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