\begin{document}
%% commentaire

\title{ceci est le titre}

\author{ceci est l'auteur}

\maketitle

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\tableofcontents

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\section{aaaa}
\subsection{aa aa}

bla bla bla: las?

\begin{eqnarray}
x= y + 1 \\
f(x,y)= \frac{x}{y^2+1} \\
\end{eqnarray}

\subsection{b b}

bla bla bla

\subsection{cc c}

bla bla bla

\section{bb}

bla bla bla

\subsection{qfaa aa}

bla bla bla

\subsection{bze b}

bla bla bla

\subsection{cc fzc}

bla bla bla

\section{ccc}

bla bla bla

\subsection{aa faa}

bla bla bla

\subsection{bhr b}

bla bla bla

\subsection{ccjy c}

bla bla bla


\end{document}

partie non traitée