Problem:
Compute
$\left(
\begin{array}{ccc}
 2 & 0 & -1 \\
 1 & -2 & 1 \\
 0 & 3 & -1 \\
\end{array}
\right)^2$.
Answer:
$\left(
\begin{array}{ccc}
 4 & -3 & -1 \\
 0 & 7 & -4 \\
 3 & -9 & 4 \\
\end{array}
\right)$
{'source': 'AMPS', 'file': 'amps/mathematica/linear_algebra/powers_and_exp/15698.txt'}