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

\documentclass[margin=5mm]{standalone}
\usepackage{ProfLycee}

\begin{document}

\begin{tikzpicture}[x=0.75cm,y=0.75cm,xmin=-4,xmax=4,xgrille=1,xgrilles=0.5,ymin=-0,ymax=4,ygrille=1,ygrilles=0.5,line join=bevel]
	\fill [draw=black,very thick,fill=lightgray] (-4,0) -- plot[samples=250,domain=-4:4] (\x,{exp(\x)/(\x*\x+1)}) -- (4,0) -- cycle;
	\draw[very thick] (-4,0) --++ (-0.66,0.788) ;
	\draw[very thick] (4,3.212) --++ (-0.66,0.788) ;
	\begin{scope}[shift={(-0.66,0.788)}]
		\draw[very thick,samples=250,domain=\xmin:\xmax] plot (\x,{exp(\x)/(\x*\x+1)}) ;
	\end{scope}
	\draw (0,-1.25) node {Vue de profil du toboggan} ;
\end{tikzpicture}

\end{document}