Math 217:
Differential Equations, Spring 2010
Classes Meet:
|
Joe Lakey |
MT-RF-- 10-11 (Section 1) 12-1 (Section 2) |
Busch 100 |
Instructor
Text
Review Session
Office Hours
|
Joe Lakey |
M, T: 11-12, Th, 1-2 or by appt. |
Cupples I, 105 |
|
Kelly Bickel |
T: 2-3 |
Lopata,
323 |
Course Webpages
Prerequisite
Lectures
Homework
· You will
have graded homework turned in every Thursday at the beginning of Thursday's
lecture. Late homework will not be
accepted! In addition to the problems to be collected and graded,
additional recommended problems will be assigned, but not collected. Exam problems often will be similar, but not
identical, to assigned problems.
· Put the
following information at the top left corner of each page of
your homework: full name, student ID, list of problems turned in,
assignment number, and the due date. The homework that you turn in will be
graded on several factors including accuracy and neatness. It is your
responsibility to make sure that the grader can understand your work.
Exams
|
Exam 1 |
February 9 |
6:30-8:30p.m. |
|
Exam 2 |
March 16 |
6:30-8:30p.m. |
|
Exam 3 |
April 13 |
6:30-8:30p.m. |
|
Final |
May 7 |
10:30a.m.-12:30p.m. |
The final
exam date cannot be changed for reasons of traveling convenience.
· Your Washington U photo ID card
· Several pencils (with erasers)
· An approved scientific calculator (see policy below)
· 3x5 note card with any helpful notes you care to make.
Please do not bring the following with you to your exam:
· Notes other than the 3x5 card
· Scratch paper (there is plenty of room to write on the test
booklet)
· Non-approved devices
Sample Exams
· Sample test will be posted approximately one week
before each evening test. Exams from previous semesters can be found on the Math department web page.
Grading scale
|
A |
90 |
|
B |
75 |
|
C |
60 |
|
D |
50 |
Calculator Policy
Academic Integrity
Homework assignments (subject
to change until the Thursday before the assignment is due)
Week 1 (due 1/28) 1.1 #28; 1.2 #26, 38, 39; 1.3 # 6, 16, 18, 27; 1.4 #12, 25,
64
Suggested: 1.1. #21,
29; 1.2 #28, 37, 40, 41; 1.3 #19, 21; 1.4 # 18, 27, 59
Week 2 (due 2/4) 1.4 # 34, 49; 1.5 #7, 22, 24, 30, 33, 38; 1.6 #2, 8, 23, 31,
37; 2.1 #5, 9, 18; 2.2 #10, 11, 21
Suggested:
1.4 #45, 43; 1.5 # 23, 25, 37, 39; 1.6 # 3, 10, 27, 33, 39, 56; 2.2 # 7, 9
Week 3 (due 2/11) Study for Test 1 http://www.math.wustl.edu/~kbickel/practicetest1.pdf
Solutions
for the practice test: http://www.math.wustl.edu/~kbickel/practicetest1_solutions.pdf (Note: for #3 , both III and IV are exact)
Week 4 (due 2/18) 2.3 #1, 2, 7, 25, 26; 2.4 #2, 5, 9; 2.5 #3,5
Suggested:
2.3 # 3; 2.4 # 3, 7; 2.5 # 4
Week 5 (due 2/25) 3.1 #2, 10, 20, 21, 32, 33, 36, 40; 3.2 #4, 12, 24, 30 3.3
#5, 9, 12, 18, 23, 33
Suggested: 3.1 #’ 3, 11, 23, 25, 31, 37, 41; 3.2 # 3, 11,
23; 3.3 # 7, 11, 19, 25, 35
Week 6 (due 3/4) 3.4 #3, 4, 8, 13; 3.5
#7, 10, 18, 28, 33, 39 3.5 #52, 55, 57, 59, 60; 3.6 #2, 6, 7, 15, 24
Correction for problem 60!
The complimentary solution given is incorrect, the correct complimentary
solution is y_c=C_1 x^{1/2}+C_2 x^{3/2}. Using this complimentary solution will
give the correct answer.
Suggested: 34 #’s 2,
5, 6, 14 ; 3.5 #’s 13, 16, 27, 34, 37, 51, 54, 58; 3.6 #’s 5, 7, 17, 25
Week 7 (due 3/18) UPDATED SOLUTIONS!: http://www.math.wustl.edu/~kbickel/DE_practice2_solutions.pdf
Week 8 (due 3/25) 4.1 #3, 4, 15, 18, 24, 25; 4.2 # 14,20,30,34,38, 43 5.1 #3,
4, 9, 12
Week 9 (due 4/1) 5.2 #2,6,15,26,29; 5.3 # 3,9,13; 5.4 #2, 9,15, 24, 25, 28, 33
Week 10 (due 4/8) 5.5 # 1,4,15; 5.6 # 5,19,25; 7.1 # 1,5,8,17,19,21; 7.2 #
7,15,37
Week 11 (due 4/15) Study for Test 3 http://www.math.wustl.edu/~kbickel//practicetest3.pdf
Solutions for the practice test: http://www.math.wustl.edu/~kbickel/exam3_practice_solutions.pdf
Week 12 (due 4/22) 7.3 # 10, 19, 38; 7.4 #
22, 27; 7.5 # 15, 30, 38; 7.6 # 8, 18
Week 13(due 4/28) 8.1 #
12, 14, 25; 8.2 # 7, 14, 32, 33; 8.3 #1, 19, 25