我正在绘制多项式的图形，PSTricks但输出看起来不像多项式的图形……为什么？我的代码是：
\documentclass{report}
\usepackage{pst-all,pstricks,pst-eucl}
\begin{document}
\begin{center}
\psset{unit=0.8cm}
\begin{pspicture}(-9,-15)(9,2)
\psaxes(0,0)(-9,-15)(9,2)
\psplot[algebraic,plotstyle=curve,linewidth=1pt,linecolor=red]{-8}{8}{1 - 3876218985722260225*x^2/10892114744073986176 + 14975974793271450625*x^4/174273835905183778816 - 317095420958296875*x^6/26811359370028273664 + 194412970920703125*x^8/214490874960226189312 - 2090988251953125*x^10/53622718740056547328 + 99480224609375*x^12/107245437480113094656 - 7879638671875*x^14/697095343620735115264 + 152587890625*x^16/2788381374482940461056}
\end{pspicture}
\end{center}
\end{document}
图表如下图所示：
谢谢，José Santos
答案1
使用可选参数curvature，否则你会得到类似贝塞尔曲线：
\documentclass{report}
\usepackage{pst-all}
\begin{document}
\begin{center}
\psset{unit=0.8cm}
\begin{pspicture}(-9,-15)(9,2)
\psaxes(0,0)(-9,-15)(9,2)
\psplot[algebraic,plotstyle=curve,curvature=1 1 0, linewidth=1pt,linecolor=red]{-8}{8}{1 -
3876218985722260225*x^2/10892114744073986176 + 14975974793271450625*x^4/174273835905183778816 -
317095420958296875*x^6/26811359370028273664 + 194412970920703125*x^8/214490874960226189312 -
2090988251953125*x^10/53622718740056547328 + 99480224609375*x^12/107245437480113094656 -
7879638671875*x^14/697095343620735115264 + 152587890625*x^16/2788381374482940461056}
\end{pspicture}
\end{center}
\end{document}
