%
% tkz-euclide (14/01/2011)
%
% Coding (utf8) Creator (TeX) Producer (pdfeTeX) 
% Author Alain Matthes
\input{tkzfctpreamble.ltx}

\begin{document}

\begin{tikzpicture}[scale=2]
  \tkzInit[xmin=-3,xmax=4,ymin=-2,ymax=4]
  \tkzGrid(-3,-2)(4,4)
  \tkzDrawXY
  \tkzFct[domain = -2.15:3.2]{(2+\x)*exp(-\x)}
  \tkzDrawArea[pattern=north west lines,domain =-2:2]
  \tkzDrawTangentLine[draw,color=blue](0)
  \tkzDrawTangentLine[draw,color=blue](-1)
  \tkzDefPointByFct(2)  \tkzGetPoint{C}
  \tkzDefPoint(2,0){B}
  \tkzDrawPoints(B,C)  \tkzLabelPoints[above right](B,C)
  \tkzRep
\end{tikzpicture}

\end{document} 
