\documentclass[10pt]{article} \usepackage{pstricks-add} \pagestyle{empty} \begin{document} \newrgbcolor{xdxdff}{0.49 0.49 1} \newrgbcolor{ffdxqq}{1 0.84 0} \psset{xunit=1.0cm,yunit=1.0cm,algebraic=true,dimen=middle,dotstyle=o,dotsize=3pt 0,linewidth=0.8pt,arrowsize=3pt 2,arrowinset=0.25} \begin{pspicture*}(-6.67,-4.98)(10.22,18.64) \psaxes[labelFontSize=\scriptstyle,xAxis=true,yAxis=true,Dx=1,Dy=2,ticksize=-2pt 0,subticks=2]{->}(0,0)(-6.67,-4.98)(10.22,18.64) \psline[linewidth=4pt](3.37,10.88)(4.34,10.88) \psplot[linewidth=2.8pt,linecolor=red,plotpoints=200]{-6.669130547846095}{10.22200831544121}{4*x^(2)+3*x} \psplot[plotpoints=200]{-6.669130547846095}{10.22200831544121}{8*x+3} \psline[linestyle=dashed,dash=10pt 10pt,linecolor=ffdxqq](0,10)(1.58,14.68) \rput[lt](-3.93,14.84){\parbox{2.95 cm}{raul galora \textbackslash \textbackslash \textbackslash \textbackslash 14/08/2015 \textbackslash \textbackslash \textbackslash \textbackslash f(x)= 4x²+3x \textbackslash \textbackslash \textbackslash \textbackslash limite( 2, 1,70}} \begin{scriptsize} \psdots[dotsize=5pt 0,dotstyle=*](4.31,10.88) \rput[bl](4.13,11.51){$a = 1.58$} \rput[bl](-2.41,17.71){\red{$f$}} \rput[bl](-0.83,-4.77){$f'$} \psdots[dotstyle=*,linecolor=xdxdff](0,10) \rput[bl](0.06,10.24){\xdxdff{$C$}} \psdots[dotstyle=*,linecolor=darkgray](1.58,14.68) \rput[bl](1.65,14.93){\darkgray{$B$}} \rput[bl](0.98,11.93){\ffdxqq{$b$}} \end{scriptsize} \end{pspicture*} \end{document}