\documentclass[a4j]{jarticle}
%\usepackage{emathPk}
%\usepackage{emathPh}
\usepackage{emathPp}
\checkPerl

\begin{document}

\begin{zahyou}[ul=6mm](-2,6)(-2,8)
  \def\Fx{X*(X-2)}
  \tenretu*{A(1,-1);B(2,0)}
  \Put\A[syaei=xy]{}
  \Put\B[se]{2}
  \YGurafu*\Fx
  \kuromaru{\O;\A;\B}
\end{zahyou}

\begin{zahyou}[ul=6mm](-6,6)(-6,6)
  \def\Ft{3*(exp(T)+exp(-T))/2}
  \def\Gt{3*(exp(T)-exp(-T))/2}
  \BGurafu*\Ft\Gt{-3}{3}
\end{zahyou}

\begin{zahyou}[ul=21mm](-1,6)(-1,5)
  \def\Fy{sqrt(9+Y*Y)}
  \def\Gy{-3+sqrt(9+Y*Y)}
  \def\HAy{0.6*Y}
  \def\HBy{0.3*Y}
  \XGurafu*\Fy
  \XGurafu*\Gy
  \XGurafu*\HAy
  \YGurafu*\HAy
%  \XGurafu*\HBy
%  \YGurafu*\HBy
  \Hasen{(-1,-1)(5,5)}
  \Hasen{(-1,1)(1,-1)}
  \Drawline{(3,-1)(3,5)}
%  \Chainline{(3,2.4)(6,4.8)}
  \Hasen{(3.75,2.25)(2.4,0)}
  \Hasen{(4.8,4)(2.4,0)}
  \Hasen{(1.8,4)(-0.6,0)}
\end{zahyou}


\end{document}