I would like to reproduce the following table from the Wikipedia page on Runga-Kutta methods:
As a result, I need the dividing lines. While this answer here: https://tex.stackexchange.com/a/33522/295600 works great for the vertical dividing line, I don't know how to replicate the horizontal dividing line.
Use \hline to create a full-width horizontal line in array and tabular environments.
\documentclass{article} % or some other suitable document class
\begin{document}
[
\renewcommand\arraystretch{1.333} % default: 1.000
\begin{array}{@{} c | ccccc @{}}
0 & \
c_2 & a_{21} \
c_3 & a_{31} & a_{32} \
\vdots & \vdots & & \ddots \
c_s & a_{s1} & a_{s2} & \cdots & a_{s,s-1} \
\hline
& b_1 & b_2 & \cdots & b_{s-1} & b_s
\end{array}
]
\end{document}
You can add \hline after the \\ that separates the penultimate and final lines of the matrix.
