%% 
%%  Ein Beispiel der DANTE-Edition
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%%  7. Auflage
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%%  Beispiel 27-02-16 auf Seite 570.
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%%  Copyright (C) 2016 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
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\documentclass[]{exaarticle}
\pagestyle{empty}
\setlength\textwidth{193.16928pt}
\setlength\parindent{0pt}
\def\pshlabel#1{\footnotesize#1} \def\psvlabel#1{\footnotesize#1}
\def\dt{\ensuremath{\,\mathrm{d}t}}
%StartShownPreambleCommands
\usepackage{pst-func}
%StopShownPreambleCommands
\begin{document}
\psset{xunit=0.75}
\begin{pspicture}(-0.25,-2)(15,2) \psaxes[dx=1cm,Dx=2]{->}(0,0)(-0.25,-2)(15,2)
  \psplot[plotpoints=500]{0.01}{14.5}{ x RadtoDeg sin x div }
  \psSi[plotpoints=500,linecolor=red,linewidth=1pt]{0.01}{14.5}
  \pssi[plotpoints=500,linecolor=blue,linewidth=1pt]{0.01}{14.5}
  \rput(5,1){\color{red}$Si(x)=\int\limits_{0}^x \frac{\sin(t)}{t}\dt$}
  \rput(4.5,-1.5){\color{blue}$si(x)=-\int\limits_{x}^{\infty}
     \frac{\sin(t)}{t}\dt=Si(x)-\frac{\pi}{2}$}
  \rput(8,.5){$f(x)= \frac{\sin(t)}{t}$}
\end{pspicture}
\end{document}