\begin{cminipage}[fond3] \begin{center}$ \ln(\cos x) = -{{{1}\over{2}}x^{2} - {{1}\over{12}}x^{4} - {{1}\over{45}}x^{6}+ O(x^{7})} $\end{center} \end{cminipage} \begin{center}\includegraphics[scale=0.56]{dl03.ps}\end{center}