\section{Ex 2}
All of us did this problem.  Greg and Anup used Matlab, Jeremy used Python.  It appears that it will not solve for $\tau = 10^{4}, 10^{6}$ and that for other values of $\tau$, the relative error could not be controlled very well.  Here is the table of values we got:\\
\begin{center}
\input{p02table}
\end{center}
