[pstricks] pb implicitplot

[piatecki]

This little program

\documentclass[10pt,a4paper]{article}
\usepackage{pstricks,pst-func}
\begin{document}

\begin{pspicture*}(-3,-3.2)(3.5,3.5)
\psaxes{->}(0,0)(3,3)
\psplotImp[linewidth=2pt,linecolor=blue,algebraic](0,0)(1,1){0.6*x^(0.6)*y^(-0.4)/(2*x^(0.6)+3*x^(0.6))^2-2}
\end{pspicture*}
\end{document}

does not show the graph in the plane.

Where is my fault ?

Thanks

Cyrille Piatecki