AMATH 351
SLN 1189, MWF 10:30-11:20, Electrical Engineering I 037

Introduction to Differential Equations and Applications



Instructor:

Sarah E. Hewitt
Guggenheim 417
tel: 685-9395
fax: 685-1440
shewitt@amath.washington.edu
office hours: M,W 9-10am, F 1-3pm
Holiday office hours (1/19, 2/16) held at Sureshot Espresso, 4505 University Way NE

Teaching Assistant:

Brett Pontarelli
Guggenheim 410
fax: 685-1440
bpontare@u.washington.edu
office hour: Tuesday 10:30-11:20


Course description Textbook & Notes Syllabus Objectives Schedule Grades

Course Description

Introductory survey of ordinary differential equations. Linear and nonlinear equations. Taylor series. Laplace transforms. Emphasis on formulation, solution, and interpretation of results. Examples from physical and biological sciences and engineering.

Textbook & Notes

W. E. Boyce & R. C. DiPrima, Elementary Differential Equations (Seventh Edition). John Wiley & Sons, 2001. Available at the University Bookstore.

The in-class lectures will follow with the course notes developed by J. Nathan Kutz, found here in Postscript (.ps) and Pdf (.pdf) formats.

Additionally, a review sheet in Postscript (.ps) and Pdf (.pdf) formats, courtesy of Bernard Deconinck, is available. It is assumed that students have mastered the material on this review sheet.

Syllabus

(1) First Order Differential Equations: Solution techniques for linear and separable equations. Modeling of problems in mechanics and population modeling. Remarks on existence and uniqueness of solutions.

Ch. 2 : approximately 3 lectures

(2) Second and Higher Order Differential Equations: Analytic techniques for homogeneous equations with constant coefficients. Linear independence and characteristic equation. Nonhomogeneous equations and variation of parameters. Problems in vibration and electrical circuits.

Ch. 3 : approximately 5 lectures

(3) Series Solutions of Second Order Linear Equations: Power series expansion near regular and singular point. Euler equations. Bessel's equations.

Ch. 5 : approximately 3 lectures

(4) The Laplace Transform: Definition of Laplace transform and application to initial value problem. Step functions, discontinuities, impulse functions, and the convolution integral.

Ch. 6 : approximately 3 lectures

(5) System of First Order Linear Equations: Brief review of matrices and system formulation. Eigenvalues and linear dependence. Interpretation of eigenvalues in physical systems.

Ch. 7 : approximately 5 lectures

(6) Nonlinear Differential Equations and Stability: Introduction to phase-plane analysis techniques and critical points. Applications to nonlinear systems such as the predator-prey model. Periodic solutions, limit cycles, and chaotic behavior.

Ch. 9 : approximately 5 lectures

Learning Objectives and Instructor Expectations

Differential equations is a fundamental topic in applied mathematics. The broad nature of the subject means that the course will move quickly, covering a number of topics. I will let you know clearly what you need to learn, what is important and what is not. Students are expected to take an active role in their education by completing homework sets and participating in class.

Homeworks are used to reinforce class lectures, not as a way to introduce material not covered in class. Exams will emphasize basic techniques as applied to simple, fundamental problems. Please note that students should be aware of the policies of the University of Washington's Office of Scholarly Integrity regarding scientific and scholarly misconduct found here.

Schedule and Homework

Follow links in the table below to obtain a copy of the homework in PostScript (.ps) or Adobe Acrobat (.pdf) format. You may also obtain here solutions to some of the homework and exam problems. An item shown below in plain text is not yet available. For additional information regarding viewing and printing the homework and solution sets, click here.

Homework and Exams Homework Due Date Homework Problem Sets Homework Solutions
First day of classes Monday, January 5
Homework#1 due Friday, January 9 Homework #1 (.ps, .pdf) HW #1 Solutions (.ps, .pdf)
Homework#2 due Friday, January 16 Homework #2 (.ps, .pdf) HW #2 Solutions (.ps, .pdf)
Martin Luther King Day Monday, January 19 No class
Homework#3 due Friday, January 23 Homework #3 (.ps, .pdf) HW #3 Solutions (.ps, .pdf)
Exam Review Session Friday, January 23 optional 5-6:30pm, BLM (Balmer) 206
Office Hours Monday, January 26 Bernard Deconinck GUG 407 9-10am
Exam I Monday, January 26
Office Hours Wednesday, January 28 Brett Pontarelli GUG 410 9:30-10:20am
Homework#4 due Friday, January 30 Homework #4 (.ps, .pdf) HW #4 Solutions** (.ps, .pdf)
Office Hours Wednesday, February 4 Sarah Hewitt GUG 417, 4-5pm
Homework#5 due Friday, February 6 Homework #5 (.ps, .pdf) HW #5 Solutions (.ps, .pdf)
Exam Review Session Monday, February 9th optional 5-6:30pm BLM(Balmer) 206
Office Hours Wednesday, February 11 Bernard Deconinck GUG 407 9-10am
Exam II Wednesday, February 11
Homework#6 due Friday, February 13 Homework #6 (.ps, .pdf) HW #6 Solutions (.ps, .pdf)
President's Day Monday, February 16 No class
Homework#7 due Friday, February 20 Homework #7 (.ps, .pdf) HW #7 Solutions (.ps, .pdf)
Homework#8 due Friday, February 27 Homework #8 (.ps, .pdf) HW #8 Solutions (.ps, .pdf)
Homework#9 due Friday, March 3 Homework #9 (.ps, .pdf) HW #9 Solutions (.ps, .pdf)
Homework#10 due Friday, March 12 Homework #10 (.ps, .pdf) HW #10 Solutions (.ps, .pdf)
Last day of classes Friday, March 12
Exam Review Session Friday, March 12 optional 5-6:30pm room TBA
Final Exam Monday March 15, 8:30 am

Grading

Your course grade will be calculated by weighing your homework, Exam I, Exam II, and Final grades in the proportions 45%, 15%, 15% and 25%, respectively.

Homework problem sets, worth 45% of your final grade will be assigned weekly. Homework is due by 4pm on the due date in the instructor's mailbox (located in GUG 408). Late homework will not be accepted. Solution sets will be posted on the course website once the deadline has passed. The lowest homework score for each student will be dropped. Each remaining homework set is weighed equally according to percentage, making them each worth 5% of your final grade.

Homework should be presented in a clear, professional, and precise manner. The grader is allowed to deduct points for presentation. Every homework should have a header with the student's name, course number, date, homework assignment number, and a list of collaborators.

Sample Homework Header

Susie Que
Amath 351
1/9/04
Homework #1
Collaborators: Jane Smith, John Doe

There will also be two fifty-minute-long exams, each constituting 15% of your grade and a comprehensive final for 25% of your grade.

The test schedule is as follows:

Exam I: Monday, January 26, 2004 (15% - 50 minutes)
Exam II: Wednesday, February 11, 2004 (15% - 50 minutes)
Final : 8:30 a.m. - 10:20 a.m. - Monday, March 15, 2004 (25% - 2 hours)

Review sessions for Exam I, Exam II, and the Final will take place Friday, January 23, Monday February 9, and Friday March 12 respectively from 5-6:30pm in Balmer Hall room 206. The review sessions will have an open format.

You are allowed one 8-1/2 by 11 inch sheet of notes for each exam. You will have to turn in your note sheet with your exam, but it will be returned to you with your graded exam.

You may view your homework and exam grades on-line. Before doing so for the first time, you must request a password. Please note this change to our system: Your student ID number should be entered excluding any leading zeros (e.g. 12345 instead of 0012345).

** Updated: February 1, 2004

<shewitt@amath.washington.edu> Fri Mar 12 16:07:59 2004