Mathematics 307 H

Autumn 2005

Introduction to Differential Equations

Instructor: Xiaosheng Li
Lecture Time and Location: MWF 1:30pm--2:20pm LOW 201
Office Hours: MW 2:30pm--3:30pm and by appointment
Office: PDL C-543
Email: xli@math.washington.edu
Class Webpage: www.math.washington.edu/~xli/307h05a.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; and possibly 7
     Chapter 6: Section 1,2,3,4
Prerequisite: Math 125; Math 126 strongly recommended

Exam Schedule:
     Midterm I : October 19  (Wednesday, in class, covering Chapter 2)
     Midterm II: November 18 (Friday, in class, covering Chapter 3)
     Final Exam: December 12 (Monday, 2:30pm-4:20pm, LOW 201, cumulative)
Grading Policy:
     Homework   20%
     Midterm I   20%
     Midterm II  20%
     Final Exam  40%
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 each 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, December 12, 2:30--4:20pm
Location: LOW 201 (our usual room)


Key to Final Exam (.pdf)

Homework Assignments: HW1  HW2  HW3  HW4  HW5  HW6  HW7  HW8

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

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

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

Math 307H Syllabus (.pdf)

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

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

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

Direction Field Plotter (Java)