\subsection{\bf When Should You Use Gaussian?}

\begin{slide}
\begin{itemize}
\item (iv) Comparing Gauss with fixed grid point method, Gauss
``saves'' a factor of two by doubling the polynomial order for fixed
number of function evaluations.  However, this advantage is lost when
compared to Romberg as latter also gains a factor of two as reuses
points.  Romberg is further much easier to code.

\item (v) So use Romberg if you have a few integrals which are needed
to prescribed accuracy.  Use Gaussian Integration when you have a lot
of integrals with similar $f(x)$ and the right value of $n$ can be
determined before hand.
\end{itemize}
\end{slide}

