Mathematics 307 B

Winter 2006

Introduction to Differential Equations

Instructor: Xiaosheng Li
Lecture Time and Location: MWF 10:30am--11:20am LOW 205
Office Hours: MW 11:30am--12:30pm and by appointment
Office: PDL C-543
Email: xli@math.washington.edu
Class Webpage: www.math.washington.edu/~xli/307b06w.htm

Textbook:
     Elementary Differential Equations and Boundary Value Problems
     by W. E. Boyce and R. C. DiPrima, 8th edition
Course Plan:
     Chapter 2: Section 1,2,3,4,5,7
     Chapter 3: Section 1,4,5,6,8,9
     Chapter 6: Section 1,2,3,4
Prerequisite: Math 125; Math 126 strongly recommended

Exam Schedule:
     Midterm : February 8 (Wednesday, in class, covering up to Chapter 3 Section 5)
     Final: March 13 (Monday, 8:30am--10:20am, LOW 205, cumulative)
Grading Policy:
     Homework  15%
     Midterm  35%
     Final  50%
Homework:
     Assigned weekly and due on Fridays at the beginning of the class.

Important:
     • Make ups are permitted only under exceptional circumstances.
     • A piece of notes (8.5*11 inches, letter size, one side) will be
      allowed on the midterm and the final, along with a scientific
      (but not graphing) calculator.
     • Late homework will not be accepted, but the lowest homework grade
      will be dropped.
     • Feel free to work with other people on your homework, but you must
      write your solutions yourself.
     • Grader will grade two or three problems from each assignment
      carefully, and check the completeness of other problems.

Final Exam:

Time: Monday, MARCH 13, 8:30am--10:20am

Location: LOW 205 (our usual room)

Extra Office Hour:

Sunday, March 12, 4pm--5pm

Key to Final (.pdf)


Homework Assignments: HW1  HW2  HW3  HW4  HW5  HW6  HW7  HW8

Practice Final (.pdf)  Key to Practice Final (.pdf)

Key to Midterm (.pdf)

Practice Midterm (.pdf)  Key to Practice Midterm (.pdf)

Math 307B Syllabus (.pdf)

Direction Field Plotter (Java)

Basic Formulae (.pdf) (thanks to Prof. Marshall)

Notes on Complex Numbers (.pdf) (thanks to Prof. Sylvester)

Complex Exponential Function (.pdf) (thanks to Prof. Erickson)