NEWS:

• Model solutions to Worksheet 3 are now posted here and on Canvas (a few days early, for Exam preparation).
• A day or so before an evening exam, you may find your room and seat assignment at the following URL:
  https://www.math.wustl.edu/secure/examlookup
• Worksheet 4 is now posted here and on Canvas.
• HW 3, Q.1 on WebWork does not recognize correct answers to Part 3, where you must enter the formula F(x,y) for which the relation F(x,y)=C solves the differential equation. Rather than delete this valuable exercise, I ask that you enter your best and final solution once you have it. I will grade this one part manually after the HW 3 deadline.
• Grading police update: The final exam score will replace one midterm score if this improves the course score. No make-up midterms will be offered.

Syllabus

Topics. Introduction to ordinary differential equations: first-order equations, linear equations, systems of equations, series solutions, Laplace transform methods, numerical solutions.

Prerequisites. Successful completion of, or concurrent enrollment in, Math 233.

Time. Classes meet Mondays, Wednesdays, and Friday, at 9am (section 1) and 10am (section 2) in McMillan G052.

Text. The lectures will follow Krantz, Differential Equations: Theory, Technique and Practice (Third edition) ( Publisher website).

Discussion Sections. Meet with your assistant instructor weekly on Thursday for help on homework and for additional practice. Worksheets for these meetings are posted below:

	Worksheet 01, due by Wednesday, January 22nd. (Model solutions.) Worksheet 02, due by Wednesday, January 29th. (Model solutions.) Worksheet 03, due by Wednesday, February 5th. (Model solutions.) Worksheet 04, due by Wednesday, February 12th.

Homework. Problem sets will be assigned weekly on WebWork.
You are encouraged to collaborate on homework and to work additional exercises from the indicated problem sections, although the homework grade will be based only on the assigned exercises.

Tests. There will be three midterm examinations and one cumulative final examination. Midterms are scheduled for Wednesdays, 6:30-8:30pm, on February 5, March 5th, and April 9th. The final is on Friday, May 2nd, 10:30am-12:30pm.

The final exam score will replace one midterm score if this improves the course score. No make-up midterms will be offered.

Grading. One score will be assigned for homework, one for the midterm examinations, and one for the final examination. These three will contribute in respective shares of 15%, 60%, and 20% to the course score. Discussion section attendence will count for 5%. Letter grades computed from the course score will be as follows:

Office Hours. MWF 1-2pm for both sections, or by appointment.