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%%
%% A DANTE-Edition example
%%
%%
%% 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
%%
\documentclass[]{article}
\pagestyle{empty}
\setlength\textwidth{201.70511pt}
\setlength\parindent{0pt}
\usepackage{pstricks,pst-plot}
\begin{document}
\begin{pspicture}(-4,-4)(4,4)
\psplot[plotpoints=1000,linecolor=blue,
linewidth=1.5pt]{-4}{4}{x dup RadtoDeg 16 mul 3.14 div cos mul}
\psline[linecolor=red](-4,-4)(4,4)
\psline[linecolor=red](-4,4)(4,-4)
\psaxes{->}(0,0)(-4,-4)(4,4)
\uput[-90](4,0){$x$} \uput[0](0,4){$y$}
\end{pspicture}
\end{document}
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