%%
%% A DANTE-Edition example
%%
%% Example 28-02-3 on page 523.
%%
%% Copyright (C) 2011 Herbert Voss
%%
%% It may be distributed and/or modified under the conditions
%% of the LaTeX Project Public License, either version 1.3
%% of this license or (at your option) any later version.
%%
%% See
http://www.latex-project.org/lppl.txt for details.
%%
%%
%% ====
% Show page(s) 1
%%
\documentclass[]{article}
\pagestyle{empty}
\setlength\textwidth{375.57637pt}
\setlength\parindent{0pt}
\usepackage{pstricks,pst-func}
\begin{document}
\psset{yunit=0.4cm,xunit=0.8cm}
\begin{pspicture*}(-2,-5)(4,10)
\psaxes[Dy=2,labelFontSize=\scriptstyle]{->}(0,0)(-3,-5)(4,10)
\psset{linewidth=1pt,dotstyle=x}
\psPolynomial[dotscale=2,Derivation=1,coeff=2 -1 -1 .5 -.1 .025,linecolor=red]{-2}{4}
\psPolynomial[zeroLineTo=1,markZeros,dotscale=2,coeff=2 -1 -1 .5 -.1 .025,
linecolor=blue]{-2}{4}
\rput[lb](4,8){$g(x)$}
\end{pspicture*}
\quad
\begin{pspicture*}(-2,-5)(4,10)
\psaxes[Dy=2,labelFontSize=\scriptstyle]{->}(0,0)(-3,-5)(4,10)
\psset{linewidth=1pt}
\psPolynomial[markZeros,dotscale=2,coeff=2 -1 -1 .5 -.1 .025,linecolor=cyan]{-2}{4}
\rput[lb](4,8){$g(x)$}
\end{pspicture*}
\end{document}
