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\chapter{Logo LaTeX}
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\begin{center}
{\fontsize{50pt}{800pt}\selectfont \LaTeX}\
\end{center}

\vfill

\begin{center}
{\color{azulunb}\fontsize{50pt}{800pt}\selectfont \LaTeX}\
\end{center}

\vfill

\begin{center}
{\color{verdeunb}\fontsize{50pt}{800pt}\selectfont \LaTeX}\
\end{center}

\vfill