\newif\ifimagen\imagentrue
\documentclass{article}
\usepackage{graphicx}\usepackage{amsmath}\usepackage{amsfonts}\usepackage{amssymb}\usepackage{stmaryrd}\usepackage{makeidx}\usepackage{times}\usepackage{mathptmx}\usepackage{ifpdf}\usepackage[colorlinks,pdftex]{hyperref}\usepackage[T1]{fontenc}\newcommand{\R}{{\mathbb{R}}}
\newcommand{\C}{{\mathbb{C}}}
\newcommand{\Z}{{\mathbb{Z}}}
\newcommand{\N}{{\mathbb{N}}}
\newcommand{\faux}{$\square\;$}
\newcommand{\vrai}{$\boxtimes\;$}
\newcommand{\itemf}{\item\faux}
\newcommand{\itemvv}{\item\vrai}
\newcommand{\xcasin}[1]
{\begin{quote}\ttfamily
#1
\end{quote}}
\newcommand{\xcasout}[1]
{\begin{equation*}
#1
\end{equation*}}
\newtheorem{exo}{Exercise}[section]

\pagestyle{empty}
\thispagestyle{empty}
\begin{document}
\includegraphics[width=\textwidth]{./xcas-sinplot.png}
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\includegraphics[width=\textwidth]{./xcas-sinplot2.png}
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\includegraphics[width=\textwidth]{./xcas-help-index.png}
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\includegraphics[width=\textwidth]{./xcas-help-evalf.png}
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\includegraphics[width=\textwidth]{./xcas-open.png}
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\includegraphics[width=\textwidth]{./xcas-plotode.png}
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\includegraphics[width=\textwidth]{./xcas-plotfield.png}
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\includegraphics[width=\textwidth]{./xcas-plot.png}
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\includegraphics[width=\textwidth]{./xcas-plotparam.png}
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\includegraphics[width=\textwidth]{./xcas-tangent.png}
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\includegraphics[width=\textwidth]{./xcas-3dplot.png}
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\includegraphics[width=\textwidth]{./xcas-3dparam.png}
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\includegraphics[width=\textwidth]{./xcas-3dcurve.png}
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%Options: -pdf
\end{document}
