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+%% 
+%%  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{352.81416pt}
+\setlength\parindent{0pt}
+\StartShownPreambleCommands
+\usepackage{pstricks,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 }
+\StopShownPreambleCommands
+\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}