vertical line in an equation in latex code example
Example: latex matrix vertical line
\left[
\begin{array}{cccc|c}
1 & 0 & 3 & -1 & 0 \\
0 & 1 & 1 & -1 & 0 \\
0 & 0 & 0 & 0 & 0 \\
\end{array}
\right]\left[
\begin{array}{cccc|c}
1 & 0 & 3 & -1 & 0 \\
0 & 1 & 1 & -1 & 0 \\
0 & 0 & 0 & 0 & 0 \\
\end{array}
\right]