%%
%% 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}
