% !TeX TXS-program:compile = txs:///pdflatex

\documentclass[margin=5mm]{standalone}
\usepackage[nonpgfplots]{tkz-grapheur}

\begin{document}

\begin{GraphiqueTikz}[x=1cm,y=0.5cm,Xmin=0,Xmax=5.5,Xgrille=0.5,Ymin=0,Ymax=7.5,Xgrilles=0.5,Ygrille=1,Ygrilles=1]
	\TracerAxesGrilles[Police=\small]{0,0.5,...,5}{0,2,...,6}
	\TracerCourbe[Couleur=violet]{-2*(-2*x-1)*exp(-x+1)}
	\draw[violet] (2,5) node {$\mathcal{C}_3$} ;
\end{GraphiqueTikz}

\end{document}