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+%%
+%% A DANTE-Edition example
+%%
+%% Example 29-02-29 on page 579.
+%%
+%% 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{375.57637pt}
+\setlength\parindent{0pt}
+
+\usepackage{pstricks,pst-plot,pst-eucl}
+
+\begin{document}
+\psset{unit=.75}
+\def\F{x 3 exp 3 div x sub 2 3 div add .0001 add}
+\begin{pspicture}(-3,-2)(3,4)
+ \psaxes{->}(0,0)(-3,-1)(3,4)
+ \psplot[linewidth=2\pslinewidth,linecolor=gray]{-2.5}{2.5}{\F} \psset{PointSymbol=*}
+ \pstGeonode[PosAngle=-45](0,-.2){N}\pstGeonode(2.5,1){M}
+ \pstLineAB[nodesepA=-3cm,linecolor=red]{N}{M}
+ \psset{PointSymbol=o}\pstInterFL{\F}{N}{M}{2}{A}
+ \pstInterFL[PosAngle=90]{\F}{N}{M}{0}{A'}
+ \pstInterFL{\F}{N}{M}{-2}{A''}
+\end{pspicture}
+\end{document}