Welcome Students

 

Mathematics 307 D 

 

Spring 2008

 

Introduction to Differential Equations

 

Instructor: Hongyu Liu

Lecture Time and Location: MWF 11:30am—12:20am CDH 110B

Office Hours: MW 10:00am—11:00am and by appointment

Office: PDL C-528

Email: hyliu@math.washington.edu

Class Webpage: http://www.math.washington.edu/~hyliu/math307D.htm

_________________________________________________________________________________________________________________

 

Textbook

   Elementary Differential Equations and Boundary Value Problems

   By W. E. Boyce and R. C. DiPrima, 8th edition

 

Course Plan

Chapter 2: Sections 1—5, 7

Chapter 3: Sections 1,4,5,6,8,9

Chapter 6: Sections 1—4

 

Prerequisite  Math 125; Math 126 strongly recommended

________________________________________________________________________________________________________________

 

Grading Policy

Homework  20%

Midterm      35%

Final            45%

_________________________________________________________________________________________________________________

 

Homework

Assigned weekly on Wednesday and due on the next Wednesday at the beginning of the class.

 

HW1  HW2  HW3  HW4  HW5  HW6 HW7  HW8 (NO DUE, good exercise for better understanding of the Laplace transforms)

________________________________________________________________________________________________________________

 

Exam Schedule      

      Midterm:  May 2 (Friday, in class, covering up to Chapter 3 Section 5)

      Final:   Wednesday, June 11 2008, 2:30--4:20 pm, CDH 110B, cumulative

_________________________________________________________________________________________________________________

 

Lecture Notes

 

   Lecture 1  Lecture 2  Lecture 3  Lecture 4  Lecture 5  Lecture 6  Lecture 7  Lecture 8

  

   Lecture 9  Lecture 10    Lecture 11 and 12  Lecture 13 and 14   Lecture 15—18     Lecture TBA

 

__________________________________________________________________________________________________________

 

Midterm

 

1.  Practice Midterm                       2.  Key to Practice Midterm

 

3.  Midterm                                      4.  Key to Midterm

 

___________________________________________________________________________________________________________

 

Final

 

1.      Practice Final  (Posted on May 23, 2008)

2.      Key to Practice Final  (Posted on May 25, 2008)

3.      Final Exam

4.      Solution of Final Exam

 

______________________________________________________________________________________________________________________

 

Announcements

 

·         The Final Exam has the similar setup as the Practice Final.

·         Before the final exam, if you have any questions concerning our course, you are welcome to write email to me (my email address can be found above).

·         Extra Office Hour:

10:00—11:00, Wednesday, June 11,2008

                              by Mr. T. Pong, whose office is PDL C-8D and email address is tkpong@math.washington.edu

 

·       Please bring your students ID for the final test!!!

·       The total scores and final grades for each student are sent separately to each student via email. If you have

             any questions, please write to me. The following are some statistics on the final exam, total scores and final

             grades:

 

The mean for Final is 65.97 for Total Score is 74.68, for Final Grade is 2.996556 (out of 4.0). The max for Final is 93, for Total Score is 90.37, for Final Grade is 4.0.  I curved the Final Grade according to the rule that people who got scores 0, M-A, M, M+A, 90.37 (M stands for the mean score, A is the standard deviation) would, correspondingly, get grades 0, 2.45, 3.0, 3.55, 4.0. For the Final Grade, 2 people from the interval 1.38~2.0, 10 people from the interval 2.0~3.0, 8 people from the interval 3.0~3.2, 12 people from the interval 3.2~3.6, and 2 people from the interval 3.6~4.0.

 

 

 

   

 

 

 

 

 

 

______________________________________________________________________________________________________________________

Important

 

  1. Make ups are permitted only under exceptional circumstances.
  2. Late homework will not be accepted, but the lowest homework grade will be dropped.
  3. Feel free to work with other students on your homework, but you must write the solutions yourself.
  4. Grader will grad two or three problems out of each assignment carefully, and check the completeness of the remaining problems.
  5. A piece of note (8.5×11 inches, letter sized, one sided) will be allowed on the midterm and the final, along with a scientific (but not graphing) calculator.