%% 
%%  Ein Beispiel der DANTE-Edition
%%  
%%  7. Auflage
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%%  Beispiel 27-02-14 auf Seite 568.
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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=0.25,yunit=5}
\begin{pspicture}(-12,-.65)(12,1.1)
  \rput(13,0.8){%
    $\displaystyle J_n(x)=\frac{1}{\pi}\int_0^\pi\cos(x\sin t-nt)
    \mathrm{d}t$}
  \psaxes[Dy=0.2,Dx=4]{->}(0,0)(-26,-.6)(26,1.05)
  \psset{linewidth=1pt}
  \psBessel[linecolor=red]{0}{-25}{25}
  \psBessel[linecolor=blue]{1}{-25}{25}
  \psBessel[linecolor=magenta]{3}{-25}{25}
\end{pspicture}
\end{document}