Supplemental questions/material (Note that some of homework questions are
included in the notes above).
Note1: For *.pde files, you will need to download FlexPDE program (
they have a free student version, which is sufficient for these
Note2: to run Maple worksheets, you need to also download the following
tools.mpl. Then replace the line read
`/theodore/tools.mpl` inside the worksheets
by whatever directory you put it in.