Problem:
Compute the (pseudo)inverse of
$\left(
\begin{array}{ccc}
 -5 & 2 & -1 \\
 -5 & -3 & -4 \\
 -4 & -4 & -2 \\
\end{array}
\right)$.
Answer:
$\left(
\begin{array}{ccc}
 -\frac{5}{27} & \frac{4}{27} & -\frac{11}{54} \\
 \frac{1}{9} & \frac{1}{9} & -\frac{5}{18} \\
 \frac{4}{27} & -\frac{14}{27} & \frac{25}{54} \\
\end{array}
\right)$
{'source': 'AMPS', 'file': 'amps/mathematica/linear_algebra/pseudoinverse/34970.txt'}