\setlength{\unitlength}{1cm}
\begin{center}
\begin{Picture}(-7,-3)(7,3)
\cartesianaxes(-\numberTWOPI,-2)(\numberTWOPI,2)
\POWERfunction{\COSfunction}{3}{\Ffunction}
\pictcolor{blue}
\PlotFunction[50]{\Ffunction}{-\numberTWOPI}{\numberTWOPI}
\end{Picture}
\end{center}
