%% 
%%  Ein Beispiel der DANTE-Edition
%%  
%%  1. Auflage
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%%  Beispiel 15-03-25 auf Seite 783.
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%%  Copyright (C) 2011 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
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\documentclass[]{exaarticle}
\pagestyle{empty}
\setlength\textwidth{142.324pt}
\setlength\parindent{0pt}
\usepackage[utf8]{inputenc}
\StartShownPreambleCommands
\usepackage{pst-plot,pst-math}
\StopShownPreambleCommands
\begin{document}
\begin{pspicture*}(-0.75,-.5)(6,5) \psaxes{->}(6,5)
 \psset{linewidth=1.5pt,plotpoints=200}
 \psplot[linecolor=red]{.1}{6}{x GAMMA}
 \psplot[linecolor=blue]{.1}{6}{x GAMMALN}
\end{pspicture*}
\end{document}