Problem:
Multiply
$\left(
\begin{array}{ccc}
 -2 & 0 & \frac{3}{2} \\
 \frac{5}{2} & \frac{1}{2} & -1 \\
 -\frac{5}{2} & -\frac{5}{2} & 1 \\
 \frac{1}{2} & \frac{1}{2} & -2 \\
\end{array}
\right)$ and
$\left(
\begin{array}{c}
 \frac{1}{2} \\
 0 \\
 -\frac{1}{2} \\
\end{array}
\right)$.
Answer:
$\left(
\begin{array}{c}
 -\frac{7}{4} \\
 \frac{7}{4} \\
 -\frac{7}{4} \\
 \frac{5}{4} \\
\end{array}
\right)$
{'source': 'AMPS', 'file': 'amps/mathematica/linear_algebra/multiply/883.txt'}