The fourth edition of the textbook saw the inclusion of worked examples
in all sections of the textbook so that it can now stand on its own for
learning.  Fotini Labropulu created core examples which were then edited
and added to extensively by Robert Petry.  Michael Thatcher, a student,
graciously donated time to due a first pass at typesetting Fotini's work.
The existing examples from previous questions have been largely placed
in further questions blocks with the worked example.  In this way the
instructor can go through those problems in class if desired.
