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

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

\begin{document}

\begin{GraphiqueTikz}[x=0.2cm,y=5cm,Xmin=-5,Xmax=30,Xgrille=5,Xgrilles=5,Ymin=0,Ymax=1.1,Ygrille=0.1,Ygrille=0.1]
	\TracerAxesGrilles[Elargir=2.5mm]{auto}{0.5,1}
	\DefinirCourbe[Nom=d,Trace,Couleur=blue]< d >{0.05*x+0.5}
	\DefinirCourbe[Nom=cf,Trace,Couleur=red,Debut=0]< f >{1/(1+exp(-0.2*x))}
	\MarquerPts[Style=x]{(0,0.5)/$A$/below right,(10,1)/$B$/below right}
	\PlacerTexte[Couleur=red,Police=\large]{(27.5,0.925)}{$C_f$}
\end{GraphiqueTikz}

\end{document}