% % 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}