Graphics, Figures & Tables ⇒ psplot polynomial

[Mini]

Hello,

How can I graph the polynomial f(x)=(x-1)(x-3)(x+2) using psplot?

Thanks

[CrazyHorse]

How can I graph the polynomial f(x)=(x-1)(x-3)(x+2) using psplot?

Thanks

you could at least provide the code for a minimal example.
then it it less work for those who like to help.

Code: Select all

\documentclass[12pt]{article}
\pagestyle{empty}
\usepackage{pst-plot}

\begin{document}
\psset{yunit=0.75}
\begin{pspicture}(-4,-8)(4,8)
  \psaxes[Dy=2]{->}(0,0)(-4,-8)(4,8)[$x$,-90][$y$,180]
  \psplot[algebraic,linecolor=blue,linewidth=1.5pt,
          yMaxValue=8.5,plotpoints=1000]{-3}{3.5}{(x-1)*(x-3)*(x+2)}
\end{pspicture}

\end{document} 

Herbert