%% %% An UIT Edition example %% %% Example 09-16-5 on page 182. %% %% Copyright (C) 2010 Herbert Voss %% %% It may be distributed and/or modified under the conditions %% of the LaTeX Project Public License, either version 1.3 %% of this license or (at your option) any later version. %% %% See http://www.latex-project.org/lppl.txt for details. %% %% %% ==== % Show page(s) 1 %% \documentclass[]{exaarticle} \pagestyle{empty} \setlength\textwidth{375.57637pt} \AtBeginDocument{\setlength\parindent{0pt}} \setcounter{equation}{14} \renewcommand\theequation{9.\arabic{equation}} \StartShownPreambleCommands \usepackage{gauss} \StopShownPreambleCommands \begin{document} \begin{equation} \begin{gmatrix}[b] 1 &-2 & 1 & 2\\ 2 & 3 &-2 & 3\\ 4 &-1 & 3 &-1\\ 3 & 2 &-4 & 5 \end{gmatrix} \times \begin{gmatrix}[b] x\\ y \\ z\\ t \end{gmatrix} = \begin{gmatrix}[b] 8\\ 14\\ 7\\ 5 \end{gmatrix} \end{equation} \end{document}