\begin{center}
\setlength{\unitlength}{1cm}%
\begin{Picture}(-4.5,-0.5)(4.5,3.5)
\makenolabels
\makenotics
\cartesianaxes(-4,0)(4,3)

\plotytic{0.5}
\printylabel{0.5}{1/2}
\printxticlabel{2}{2}

\Polyline(2,0)(2,0.5)(0,0,5)
\thicklines
\SCALEfunction{0.125}{\SQUAREfunction}{\F}
\PlotFunction[3]{\F}{-4}{4}
\end{Picture}
\end{center}
