%% 
%%  A DANTE-Edition example
%% 
%%  Example 28-01-1 on page 518.
%% 
%%  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{pst-plot,pst-math}

\begin{document}
\psset{unit=0.75}
\begin{pspicture*}(-5,-4)(5,5.25)
\psaxes{->}(0,0)(-5,-4)(5,5)
\psset{linewidth=2pt}
\psplot[linecolor=blue]{-5}{5}{ x COSH }
\uput[0](-3.75,4){$\cosh x$}
\psplot[linecolor=red]{-5}{5}{ x SINH }
\uput[0](-3.5,-3){$\sinh x$}
\psplot[linecolor=green]{-5}{5}{ x TANH }
\uput[0](3,1.25){$\tanh x$}
\end{pspicture*}
\end{document}