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

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

\begin{document}

\begin{GraphiqueTikz}[x=1.45cm,y=1.45cm,Xmin=0.4,Xmax=4.2,Ymin=-3,Ymax=3]
  \DefinirCourbe[Trace,Debut=0.5,Fin=3.312,Couleur=blue!50!black]{(2*x-1)*exp(-2*x+3)}
  \DefinirCourbe[Trace,Debut=0.5,Fin=3.312,Couleur=blue!50!black]{-(2*x-1)*exp(-2*x+3)}
  \draw[pflcourbe,blue!50!black](3.312,-0.15)--(3.312,0.15) ;
  \draw[pflcourbe,<->,>=stealth](3.45,-0.15)--(3.45,0.15) node[pos=0.5,right] {0,3~cm};
  \PlacerTexte[]{(2.3,-2.5)}{Fig. 1}
\end{GraphiqueTikz}

\end{document}