Problem:
Normalize the following vector:
$\left(
\begin{array}{c}
 -\frac{2}{7} \\
 \frac{11}{7} \\
 -\frac{6}{7} \\
 -\frac{2}{7} \\
 \frac{16}{7} \\
\end{array}
\right)$.
Answer:
$\left(
\begin{array}{c}
 -\frac{2}{\sqrt{421}} \\
 \frac{11}{\sqrt{421}} \\
 -\frac{6}{\sqrt{421}} \\
 -\frac{2}{\sqrt{421}} \\
 \frac{16}{\sqrt{421}} \\
\end{array}
\right)$
{'source': 'AMPS', 'file': 'amps/mathematica/linear_algebra/normalize/7946.txt'}