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%%
%% Ein Beispiel der DANTE-Edition
%%
%% 7. Auflage
%%
%% Beispiel 14-01-7 auf Seite 188.
%%
%% 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
%%
%%
\documentclass[]{exaarticle}
\pagestyle{empty}
\setlength\textwidth{352.81416pt}
\setlength\parindent{0pt}
%StartShownPreambleCommands
\usepackage{pst-plot}\psset{unit=0.8cm}
%StopShownPreambleCommands
\begin{document}
\begin{pspicture}(-3.5,-3.5)(3.5,3.5)
\psaxes[axesstyle=polar](3,0)
\psplot[polarplot,algebraic,linecolor=blue,linewidth=2pt,
plotpoints=2000]{0}{TwoPi 4 mul}{2*(sin(x)-x)/(cos(x)+x)}
\end{pspicture} \qquad
\begin{pspicture}(-3.5,-3.5)(3.5,3.5)
\psaxes[axesstyle=polar,subticklinestyle=dashed,subticks=2,
xlabelFontSize=\scriptstyle](3,360)
\psplot[polarplot,algebraic,linecolor=red,linewidth=2pt,
plotpoints=2000]{0}{TwoPi}{6*sin(x)*cos(x)}
\end{pspicture}
\end{document}
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