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%%
%% A DANTE-Edition example
%%
%%
%% 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{pst-3dplot}
\def\func{ x 3 exp x y 4 exp mul add x 5 div sub 10 mul
2.729 x dup mul y dup mul add neg exp mul
2.729 x 1.225 sub dup mul y dup mul add neg exp add }
\begin{document}
\psscalebox{0.75}{\begin{pspicture}(-4,-3)(4,4)
\psset{Alpha=45,Beta=15}
\psplotThreeD[plotstyle=curve,yPlotpoints=10,xPlotpoints=10,
linewidth=0.5pt,hiddenLine](-3,3)(-3,3){\func}
\pstThreeDCoor[xMin=-1,xMax=5,yMin=-1,yMax=5,zMin=-1,zMax=3.5]
\end{pspicture}}\hfill
\psscalebox{0.75}{\begin{pspicture}(-4,-3)(4,4)
\psset{Alpha=45,Beta=15}
\psplotThreeD[plotstyle=curve,yPlotpoints=20,xPlotpoints=50,
linewidth=0.5pt,hiddenLine](-3,3)(-3,3){\func}
\pstThreeDCoor[xMin=-1,xMax=5,yMin=-1,yMax=5,zMin=-1,zMax=3.5]
\end{pspicture}}
\end{document}
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