\LINEARCOMBINATIONfunction
               {1}{\CUBEfunction}
               {-2}{\IDENTITYfunction}
               {\Ffunction}
\begin{center}
\setlength{\unitlength}{1cm}
\begin{Picture}(-2.5,-4.5)(2.5,4.5)
\cartesianaxes(-2,-4)(2,4)
\pictcolor{blue}
\PlotFunction[10]{\Ffunction}{-2}{2}
\Put[rbr](2,4){$f(t)=t^3-2t$}
\end{Picture}
\end{center}
