Problem:
Find the least squares vector given the matrix
$\left(
\begin{array}{cccc}
 3 & 0 & 2 & 3 \\
 -3 & 2 & -3 & -1 \\
 0 & 3 & -2 & 1 \\
 -2 & -1 & 2 & 1 \\
 0 & -2 & -2 & 3 \\
\end{array}
\right)$ and the vector
$\left(
\begin{array}{c}
 -2.3 \\
 1.08 \\
 -2.91 \\
 0.98 \\
 -0.71 \\
\end{array}
\right)$.
Answer:
$\left(
\begin{array}{c}
 -0.458 \\
 -0.568 \\
 0.093 \\
 -0.53 \\
\end{array}
\right)$
{'source': 'AMPS', 'file': 'amps/mathematica/linear_algebra/least_squares/11213.txt'}