% !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=-0.25,Xmax=3.75,Xgrilles=1,Ymin=-2.95,Ymax=3.15,Ygrilles=1]
  \TracerAxesGrilles*[Origine,Derriere]{}{}
  \DefinirCourbe[Debut=0.5,Fin=3.3,Pas=0.01,Nom=cfA]<fA>{(2*x-1)*exp(-2*x+3)}
  \DefinirCourbe[Debut=0.5,Fin=3.3,Pas=0.01,Nom=cfB]<fB>{-(2*x-1)*exp(-2*x+3)}
  \TracerIntegrale
  [Bornes=abs,Couleurs=blue!50!black/cyan!50,Bord=false]%
  {fA(x)}{0.5}{3.3}
  \TracerIntegrale
  [Bornes=abs,Couleurs=blue!50!black/cyan!50,Bord=false]%
  {fB(x)}{0.5}{3.3}
  \TracerCourbe[Debut=0.5,Fin=3.3,Couleur=blue!50!black]{fA(x)}
  \TracerCourbe[Debut=0.5,Fin=3.3,Couleur=blue!50!black,StyleTrace=dashed]{fB(x)}
  \PlacerTexte[Couleur=blue!50!black]{(2,1.7)}{$\mathcal{C}_f$}
  \PlacerTexte[Couleur=black]{(3.5,-0.25)}{$\alpha$}
  \PlacerTexte[Couleur=black]{(2.5,-3)}{Fig.~2}
  \TracerAxesGrilles*[Origine,Devant]{}{}
  \RajouterValeursAxeX{1}{1}\RajouterValeursAxeY{1}{1}
\end{GraphiqueTikz}

\end{document}