[pstricks] pictures in 3d

[Denis Vergès]

Hello,

I have great problems  with the three pictures in :

http://www.ac-noumea.nc/maths/doc/bac/2004/ESSpeCaledo2004.pdf  (page 4)

using pst-3d.

\psset{xunit=0.4cm,yunit=0.4cm,xMin=0.01,xMax=10,yMin=0.01,yMax=10,zMin= 
0.01,zMax=6.81,Alpha=135,Beta=120}
\begin{pspicture}(0,0)(10,10)
\pstThreeDCoor
\pstThreeDBox(0,0,0)(10,0,0)(0,10,0)(0,0,10)
\psplotThreeD[linecolor=blue,plotstyle=line,drawStyle=xLines,hiddenLine= 
true](0.01,0.01)(10,10){x 1 3 div exp   y 1 2 div exp mul}...

Thanks for all

Denis Vergès
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