Problem:
Compute the (pseudo)inverse of
$\left(
\begin{array}{ccc}
 -4 & 4 & 1 \\
 -4 & -4 & -2 \\
 1 & -5 & 3 \\
\end{array}
\right)$.
Answer:
$\left(
\begin{array}{ccc}
 -\frac{11}{76} & -\frac{17}{152} & -\frac{1}{38} \\
 \frac{5}{76} & -\frac{13}{152} & -\frac{3}{38} \\
 \frac{3}{19} & -\frac{2}{19} & \frac{4}{19} \\
\end{array}
\right)$
{'source': 'AMPS', 'file': 'amps/mathematica/linear_algebra/pseudoinverse/32999.txt'}