%% 
%%  Ein Beispiel der DANTE-Edition
%% 
%% 
%%  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{352.81416pt}
\setlength\parindent{0pt}
\StartShownPreambleCommands
\usepackage{pst-plot,multido}
\StopShownPreambleCommands
\begin{document}
\psset{unit=0.75}
\begin{pspicture}(-6.5,-7)(6.5,7.5)
\multido{\rA=-4.71239+\psPiH}{7}{%
  \psline[linecolor=black!20,linestyle=dashed](\rA,-6.5)(\rA,6.5)}
\psaxes[trigLabelBase=2,dx=\psPiH,xunit=\psPi,
  trigLabels]{->}(0,0)(-1.7,-6.5)(1.77,6.5)[$x$,0][$y$,-90]
\psset{algebraic,plotpoints=5000,plotstyle=line}
\psplot[yMaxValue=6,linewidth=2pt,linecolor=red]{-4.55}{4.55}{(x)/(sin(2*x))}
\psplot[linestyle=dashed,linecolor=blue!30]{-4.8}{4.8}{x}
\psplot[linestyle=dashed,linecolor=blue!30]{-4.8}{4.8}{-x}
\rput(0,0.5){$\times$}
\end{pspicture}
\end{document}