\begin{cminipage}[fond3] \begin{center}$ \sqrt{1+\sqrt{1+x}} = \sqrt{2}\left({1 + {{1}\over{8}}x - {{5}\over{128}}x^{2} + {{21}\over{1024}}x^{3} - {{429}\over{32768}}x^{4}+ O(x^{5})}\right) $\end{center} \end{cminipage} \begin{center}\includegraphics[scale=0.75]{dl07.ps}\end{center}