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\documentclass[pdf,rico,slideColor,colorBG]{prosper}
\usepackage{amsmath}
\begin{document}
\begin{slide}{The quest for $\pi$}
\begin{itemize}
\item The following formula computes $8$ correct digits per iteration
(Ramanujan):
\end{itemize}
\begin{small}
\begin{equation*}
\frac{1}{\pi}=\sum_{n=0}^\infty \frac{(\frac{1}{4})_n(\frac{2}{4})_n(\frac{3}{4})_n}{n!^3}\bigl(2\sqrt{2}(1103+26390n)\bigr)\frac{1}{(99^2)^{2n+1}}
\end{equation*}
\end{small}
\end{slide}
\end{document}
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%%% mode: latex
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