Math 303

A second course in differential equations.

This page exists primarily for the use of my students in Math 303.

This area is constantly evolving, and you should check it periodically for any updates about the course. The syllabus (in .dvi format or in postscript format) contains my office hours, as well as those of the grader Ira Wijesooriya, and information on how to reach us. It also contains a list of homework assignments.

You are encouraged to contact Ira or me by email with any questions you may have:

email to Erik Guentner
email to Ira Wijesooriya

Solutions to selected homework problems:

Chapter 6 (in .dvi format or in postscript format)
Chapter 7 (in .dvi format or in postscript format)
Chapter 5 (in .dvi format or in postscript format)
Chapter 10 (in .dvi format or in postscript format) (finally!)

Selected review problems for the exams:

Solutions to the exams (solutions not available, just the exams; sorry):

Exam 1 (in .dvi format or in postscript format)
Exam 2 (in .dvi format or in postscript format)

The Wave Equation

For yor amusement and viewing pleasure...

[photo]

...a top view of a wave splitting in two, one piece travelling left and the other right; and a front view of the same thing...

[photo]

Finally, as you know, there is a Matlab component in Math 303 as I am teaching it. If you have access to Matlab on a suitable machine you do not have to use the Math Department Mac's in LAEB 275. In either case you will need some of the files below.

These are some Matlab m-files that I have written for analyzing linear, first order systems with constant coeffecients. These files are a work in progress and not a finished product. You may look at them to get ideas on how to write your own files or as a basis to begin playing with Matlab yourself. There is some documentation in each file. They have been tested on a number of the problems from Chapter 7.

There is a reserve text for the course. You will receive some handouts from this book in class and there will be some homework problems assigned from these handouts. To do these homework problems you will need some of the following m-files: