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+%%
+%% A DANTE-Edition example
+%%
+%% Example 28-02-15 on page 530.
+%%
+%% 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}
+\usepackage{pst-func}
+
+\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}