MA 231
Honors-level Differential Equations
Sections A and HP
Fall 2009

Office hours during final exam period and final exam fact sheet
Project 1
Project 2
Revised syllabus (including the modified grading scheme, office hours, phone numbers, etc.)
Email message about the homework, etc
Homework cover sheet
Homework assignments:
Handouts, demos, etc:
- September 3, 2009
  - Notetaker helper (print out and bring to class)
  - United Nations World Population Estimates
  - U.S. Population Projections by U.S. Census Bureau
  - International Society of Malthus
- September 8, 2009
  - Notetaker helper (print out and bring to class)
- September 10, 2009
  - Notetaker helper (print out and bring to class)
- September 15, 2009
  - Notetaker helper (print out and bring to class)
  - spreadsheets for dy/dt = y² - t
    - basic implementation of Euler's method
    - Euler's method with slider
  - spreadsheet for dy/dt = e^t sin y
  - Mathematica notebook used in class
- September 17, 2009
  - Notetaker helper (print out and bring to class)
- September 22, 2009
  - Notetaker helper (print out and bring to class)
  - Animation of Picard iteration (in Quicktime format)
- September 24, 2009
  - Notetaker helper (print out and bring to class)
  - Professor Devaney's phase line demo (in Quicktime format)
  - Article from SCIENCE magazine that was shown in class
- September 29, 2009
  - Notetaker helper (print out and bring to class)
- October 6, 2009
  - Notetaker helper (print out and bring to class)
  - One solution to the predator-prey system graphed in 3D
  - A solution curve and its corresponding component graphs (in Quicktime format)
    solution curve from predator-prey system
  - Three solution curves and their corresponding component graphs (in Quicktime format)
    illustrates the phase portrait for the predator-prey system
  - One solution to mass-spring system graphed in 3D
  - Two solutions to mass-spring system graphed in 3D (BIG: 900 KB)
    illustrates the concept of the phase portrait
- October 8, 2009
  - Notetaker helper (print out and bring to class)
- October 15, 2009
  - Notetaker helper (print out and bring to class)
  - spreadsheet for Euler's method for systems
  - spreadsheet for Euler's method for a predator-prey system
  - Animation related to uniqueness for autonomous systems
- October 20, 2009
  - Notetaker helper (print out and bring to class)
- October 22, 2009
  - Notetaker helper (print out and bring to class)
- October 27, 2009
  - Notetaker helper (print out and bring to class)
- October 29, 2009
  - Notetaker helper (print out and bring to class)
- November 3, 2009
  - Notetaker helper (print out and bring to class)
- November 10, 2009
  - Notetaker helper (print out and bring to class)
  - Animation of solutions as the damping parameter is increased (in Quicktime format)
- November 12, 2009
  - Notetaker helper (print out and bring to class)
- November 17, 2009
  - Notetaker helper (print out and bring to class)
  - Animation of solutions as the forcing frequency changes (in Quicktime format)
- November 19, 2009
  - Notetaker helper (print out and bring to class)
- November 24, 2009
  - Notetaker helper (print out and bring to class)
- December 1, 2009
  - Notetaker helper (print out and bring to class)
  - Mathematica notebook (optional)
- December 3, 2009
  - Notetaker helper (print out and bring to class)
- December 8, 2009
  - Notetaker helper (print out and bring to class)
Frequently asked questions (FAQ)
- Where can I read about partial fractions on the web?
Old exams:
- MA 231 exams given in Fall 2002
Answers to our exams: