Math 261, Fall 2018

Math 261 - Elementary Differential Equations
Fall 2018

Syllabus

Unforgivable Math Errors

Announcements:
- The final exam will be given on Monday, December 10 from 10:00 - 11:50 am in the usual lecture room. The exam will be cumulative, covering all the material from the course. You may wish to use this list of exam material and this list of practice problems to help you study.

Homework Assignments

Homework 1, due Friday, August 24:

Section 1.1, pages 10-11: #2, 4, 5, 12, 16, 17, 23, 28, 32
Section 1.2, pages 17-18: #1, 4, 7, 8, 12, 14
Section 2.2, pages 51-52: #2, 4, 5, 6, 9, 12, 13, 14, 15, 23, 26, 31, 32

Homework 2, due Friday, August 31:

Section 2.3, pages 61-62: #2, 3, 4, 6, 11, 14, 26, 27, 28, 37
Section 2.4, pages 69-70: #2, 5, 8, 12, 15, 22, 23, 29, 30, 32, 33, 38

Homework 3, due Friday, September 7:
(Note: I recommend that you look over these problems before Exam 1 is given on Wednesday.)

Section 2.5, pages 74-75: #1, 4, 6, 9, 10, 14, 17, 18, 22
Section 3.1, pages 90-91: #1, 2, 4, 6, 9, 13, 14, 16, 23, 24

Homework 4, due Friday, September 14:

Section 4.1, pages 128-129: #2, 4, 5, 6, 14, 16, 18, 19, 25, 27

Homework 5, due Friday, September 21:

Section 4.1, page 128: #31, 32
Section 4.2, page 131: #1, 2, 6, 10, 11
Section 4.3, pages 137-138: #4, 5, 8, 10, 11, 12, 14, 15, 16, 18, 21, 22, 32, 33, 34, 40

Homework 6, due Friday, September 28:

Section 4.4, pages 147-148: #3, 4, 8, 12, 19, 22, 24, 28, 31, 38
Section 4.6, pages 161-162: #4, 12, 13, 14, 15, 16
Section 4.7, page 168: #1, 6, 10, 14, 20, 23, 24

Homework 7, due Friday, October 12:
(Note that there is no class on Friday, so you may either turn your homework into me in class on Wednesday or office hours on Thursday, or scan your assignment and email it to me on Friday.)

Section 5.1, pages 205-207: #2, 6, 7, 8, 17, 18, 19, 20, 23, 24, 33, 34

Homework 8, due Friday, October 19:

Section 7.1, page 280: #1, 2, 6, 12, 13, 20, 24, 28, 32
Section 7.2, pages 288-289: #3, 8, 12, 14, 18, 20, 26, 31, 32, 36

Homework 9, due Friday, October 26:

Section 7.3, pages 297-299: #2, 7, 8, 16, 21, 25, 29, 37, 38, 43, 48, 49-54, 58, 65, 66
Section 7.4, pages 309-310: #1, 2, 8, 10, 12, 21, 27, 32, 39, 43, 49, 50, 51, 52

Homework 10, due Friday, November 2:

Section 6.1, pages 237-238: #1, 2, 10, 11, 12, 14, 23, 24, 26, 27, 28, 30, 31, 36, 38

Homework 11, due Friday, November 9:

When asked to find power series solutions, give at least 4 non-zero terms of the series if you can't write as a known function or power series.

Section 6.2, pages 246-247: #3, 4, 7, 8, 10, 20, 21, 24

Homework 12, due Friday, November 16:
Note that you should review these problems before the exam on Wednesday, November 14.

Section 6.3, pages 255-256: #1, 3, 8, 13, 14, 17, 21, 25, 26 (for 25 and 26, do NOT use equation (23) to get a second solution)

Homework 13, due Friday, November 30:

Section 11.1, page 425: #2, 4, 5, 9, 10, 12, 17

Homework 14, due Monday, December 10:

Section 11.2, pages 430-431: #4, 9, 13
Section 11.3, pages 437-438: #11, 14, 17, 25, 32, 33, 40
Section 12.1, page 459: #1, 5, 6, 8, 12, 14
Section 12.2, page 465: #2, 3, 7, 10

Old Announcements:
- Quiz 2 will be given on Friday, August 31 and will consist of one of the problems from Homework 2.
- Exam 1 will be given on Wednesday, September 5 in class, and will cover sections 1.1, 1.2, 2.2, 2.3, 2.4, 2.5, and 3.1. You will be permitted to use a scientific calculator if you wish, but it won't help much. No graphing or programmable calculators will be permitted.
- Quiz 3 will be given on Friday, September 21 and will consist of one of the problems from Homework 5.
- Exam 2 will be given in class on Friday, September 28. It will cover material from sections 4.1, 4.2, 4.3, 4.4, 4.6, and 4.7.
- Quiz 4 will be given on Friday, October 19, and will consist of one of the problems from Homework 8.
- Exam 3 will be given on Friday, October 26. It will cover material from sections 5.1, 7.1, 7.2, 7.3, and 7.4. You will be given this list of Laplace transforms to use.
- Quiz 6 will be given on Friday, November 9, and will consist of one of them problems from Homework 11.
- Exam 4 will be given on Wednesday, November 16, and will cover material in sections 6.1, 6.2, and 6.3.
- Quiz 7 will be given on Friday, November 30 and will consist of one of the problems from Homework 13.