%% 
%%  Ein Beispiel der DANTE-Edition
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%%  7. Auflage
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%%  Beispiel 27-02-27 auf Seite 580.
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%%  Copyright (C) 2016 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{193.16928pt}
\setlength\parindent{0pt}
%StartShownPreambleCommands
\usepackage{pst-func}
%StopShownPreambleCommands
\begin{document}
\psset{xunit=1.2cm,yunit=10cm,plotpoints=200}
\begin{pspicture*}(-0.75,-0.07)(9.5,0.85)
 \psGammaDist[linewidth=1pt,linecolor=red]{0.01}{9}
 \psGammaDist[linewidth=1pt,linecolor=blue,alpha=0.3,beta=0.7]{0.01}{9}
 \psGammaDist[linewidth=1pt,linecolor=green,alpha=2,beta=2]{0.01}{9}
 \psGammaDist[linewidth=1pt,linecolor=cyan,alpha=2,beta=1]{0.01}{9}
 \psaxes[Dy=0.1]{->}(0,0)(9.5,.8)
\end{pspicture*}
\end{document}