%% 
%%  Ein Beispiel der DANTE-Edition
%% 
%% 
%%  Copyright (C) 2010 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{190.324pt}
\setlength\parindent{0pt}
\StartShownPreambleCommands
\usepackage{pst-plot}
\StopShownPreambleCommands
\begin{document}
\psset{unit=3}\SpecialCoor
\begin{pspicture*}(-0.2,-1.05)(3.4,1.7)
  \psgrid[subgriddiv=5,gridcolor=black!20,gridlabels=0pt](1,0)(3,1.2)
  \psaxes{->}(0,0)(0,-1)(3.2,1.5)
  \uput[0](3.2,0){$x$}\uput[90](0,1.5){$f(x)$}
  \pscircle*[linecolor=red](! Euler 1){3pt}
  \psline[linecolor=red,linestyle=dashed](! Euler 0)(! Euler 1)
  \psline[linecolor=red,linewidth=0.2pt,arrowscale=2]{->}(! Euler 1)(0, 1)
  \uput[-90](! Euler 0){\color{red}$e$}
  \pscircle*[linecolor=blue](1,0){3pt}
  \psplot[linewidth=1pt]{0.2}{3}{ x ln }
  \rput(1.6,-0.5){\color{blue}\fbox{$f(x)=\ln(x)$}}
\end{pspicture*}
\end{document}