Problem:
Multiply the scalar $\frac{13}{9}$ and the matrix
$\left(
\begin{array}{cccc}
 -4 & -5 & -7 & 2 \\
 1 & -2 & 9 & -5 \\
\end{array}
\right)$.
Answer:
$\left(
\begin{array}{cccc}
 -\frac{52}{9} & -\frac{65}{9} & -\frac{91}{9} & \frac{26}{9} \\
 \frac{13}{9} & -\frac{26}{9} & 13 & -\frac{65}{9} \\
\end{array}
\right)$
{'source': 'AMPS', 'file': 'amps/mathematica/linear_algebra/multiply_by_scalar/4545.txt'}