Math 231, Fall 2009

Differential Equations I

Instructor: Dr. Stefan Richter, 302B Aconda Court, Tel.: 974-4286,  e-mail: Richter at math dot utk dot edu
Office hours: MWF 11-11:30, Th 1-2:30 PM  and by appointment.

HW #11, due Monday, 11-30 in class
p. 456 # 2, 4
p. 464 # 2, 4, 22, 24
p. 475 # 2, 12, 20, 24

Exam 3 postponed!!
Exam 3,
Friday November 20

Practice exam

HW #10, due Friday, 11-13 (9 problems)  Solutions
p. 421 # 2, 4, 6, 12, 14, 18, 20, 30
p. 445 # 20

HW #9, due Friday, 11-6  Solutions
p. 400 # 6, 10, 22, 24, 32
p. 409 # 2, 4, 10, 16, 36

Here is a 25-30 minute practice quiz. Use it to check your progress.

HW #8, due Friday, 10-30  Solutions
p. 385 # 8, 12, 14, 22
p. 391 # 4, 6, 8, 10, 22
p. 400 # 2

Exam 2,  Wednesday, 10-21    Solutions: page 1, page 2, page 3

Practice exam

HW #7, due Wednesday, Oct. 21 Solutions
p. 215 # 24(ab), 24(cd), 38, 42, 46, 48
p. 238 # 2
p. 246 # 4
p. 250 # 24
p. 270 # 4

HW #6, due Friday, Oct. 9  Solutions
p. 195 # 10, 16, 29
p. 201 # 18, 26, 28, 30, 38
p. 206 # 2, 10

Here is a 25-30 minute practice quiz. Use it to check your progress.

HW #5,  due Friday, Oct. 2.  Solutions

Some homework problems with complex numbers, 9-23

Exam 1 (Friday, 9- 18) Solutions and grades  You can check your score by way of Blackboard.

HW #4, due Friday, Sept. 18, at the beginning of class (9 problems) Solutions
p. 104 # 4, 6, 14, 24
p. 113 # 2, 4, 6
p. 121 # 2, 6

HW #3, due Friday, Sept. 11, at the beginning of class (10 problems) Solutions
p. 79 # 26
p. 82 # 4, 6, 10, 14, 20, 26, 32, 34, 40

Here is a 20-25 minute practice quiz. Use it to check your progress.

HW #2, due Friday, Sept. 4, at the beginning of class (10 problems)  Solutions
p.46 # 24, 26, 38
p.55 # 8, 18, 20, 32
p. 65 # 10, 14, 22

HW #1, due Friday, August 28, at the beginning of class (10 problems)  Solutions
page 6 # 14,
pages 14/15 # 4, 6, 10, 20, 22, 24,
page 23 # 6,
page 46 # 8, 18

We will have no graded quizzes this semester, instead there will be graded homework sets.

First day handout/syllabus

Important dates:

Friday, 8-28                HW 1 due
Monday, 9-7               Labor Day (no class)
Friday, 9- 18               Exam 1
Friday, 10-16              Fall break (no class)
Wednesday, 10-21      Exam 2
Monday,11-16            Exam 3
Friday, 11-27              Thanksgiving break (no class)
Monday, 11-30           last class
Wednesday, 12-9        Final Exam, 10:15-12:15