\batchmode
\documentclass{article}
\RequirePackage{ifthen}


\textheight 23 cm
\usepackage{amsmath}
\usepackage{amsfonts}
\usepackage{amssymb}
\usepackage{stmaryrd}
\usepackage{makeidx}
\usepackage{times}
\usepackage{ifpdf}
\ifpdf
 \usepackage[pdftex]{hyperref}
\else
\usepackage{pstricks}
\fi
\usepackage{graphicx}


\usepackage[latin1]{inputenc}
\usepackage[T1]{fontenc}
\usepackage{latexsym}

%
\providecommand{\R}{{\mathbb{R}}}%
\providecommand{\C}{{\mathbb{C}}}%
\providecommand{\Z}{{\mathbb{Z}}}%
\providecommand{\N}{{\mathbb{N}}}%
\providecommand{\xcas}{{\tt xcas }}%
\providecommand{\asinh}{\,\,\mbox{asinh\,}}%
\providecommand{\atanh}{\,\,\mbox{atanh\,}} 


\title{An introduction to the {\tt Xcas} interface}
\author{Bernard Parisse, University of Grenoble I}
\date{}
\makeindex

\usepackage[dvips]{pstcol}


\pagecolor[gray]{.7}

\usepackage[latin1]{inputenc}



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