\SUBTRACTfunction{\SQUAREfunction}{\ONEfunction}
                            {\Ffunction}
\QUOTIENTfunction{\IDENTITYfunction}{\Ffunction}
                            {\Gfunction}
\renewcommand{\axeslabelsize}{\scriptsize}
\setlength{\unitlength}{0.5cm}
\begin{Picture}(-8,-6)(8,6)
\def\xunitdivisions{2}
\def\yunitdivisions{2}
\cartesianaxes(-7,-5)(7,5)
\pictcolor{red}
\PlotFunction[5]{\Gfunction}{-7}{-1.105}
\PlotFunction[5]{\Gfunction}{-0.905}{0}
\PlotFunction[5]{\Gfunction}{0}{0.905}
\PlotFunction[5]{\Gfunction}{1.105}{7}
\end{Picture}
