%
% tkz-euclide (14/01/2011)
%
% Coding (utf8) Creator (TeX) Producer (pdfeTeX) 
% Author Alain Matthes
\input{tkzfctpreamble.ltx}

\begin{document}

\begin{tikzpicture}[scale=1.25]
  \tkzInit[xmin=-2,xmax=2,xstep=1,
           ymin=-8,ymax=24,ystep=8]
  \tkzGrid
  \tkzAxeXY
  \tkzFct[domain =-1.5:1]{3.0-1.3125*x**5-2.5*x**3}
  \tkzDefPointByFct(.5)
  \tkzDrawPoint(tkzPointResult)
  % ou bien \tkzDefPointByFct[draw](.5)
\end{tikzpicture}

\end{document} 
