Math 217 Spring, 2019

Krantz

**SYLLABUS
AND COURSE INFORMATION**

ORDINARY DIFFERENTIAL EQUATIONS

**Instructor: **Steven
G. Krantz

**Textbook: ***Differential
Equations: Theory, Technique, and Practice,***
**by
Steven G. Krantz,
second edition, Chapman and Hall/CRC Press, Boca Raton, FL, 2014.

**Office:**
103, Cupples I

**Office Hour:**
Monday, Wednesday, Friday 12:15pm-1:15pm.

**Phone:** (314) 935-6712

**e-mail:**
sk@math.wustl.edu

**Personal Web Address:**
http://www.math.wustl.edu/~sk

**Class Web Page:**
The class Web page is

http://www.math.wustl.edu/~sk/math217.html

You can also just go to my personal Web page (above) and click on the button

for Math 217.

**Dept. Office:**
100, Cupples I

**Dept. Phone:**
(314) 935-6760

**Course Description:**
The purpose of this course is to learn about the theory and solution of
ordinary differential equations. We will learn to recognize and to solve
a variety of differential equations, and we will learn a variety of
applications to physical and engineering problems.

The course will follow the text rather closely. But it is strongly advised to attend class, as the instructor will offer many ideas and insights not to be found in the book. It is also important to keep up with the homework.

**Work Required in the Course:**
There will be weekly homework assignments of two types. There will be
OnLine problems using WebWork. WebWork is handled through wustlkey.
The URL is https://webwork.wustl.edu. There will also be handgraded
problems which you will submit using another OnLine system called CrowdMark.

What is nice about WebWork is that it grades your problems in real time so that you get instant feedback. More information about how to access WebWork will be provided in due course.

The University has specified that we have three miderm exams (on February 5, March 5, and April 9 from 6:30pm to 8:30pm in rooms to be specified) and a final exam. The final exam is at 10:30am on May 3. If you cannot make one of these exams then you should tell me (the instructor) at least a week in advance so that other arrangements can be made. You find out your room and seat assigment for each exam by logging on, on the morning of the exam, to https://www.math.wustl.edu/examlookup .

The relative weights of the course components are as follows:

Homework: 20%

Midterm I: 20%

Midterm II: 20%

Midterm III: 20%

Final Exam: 20%

TOTAL: 100%

If you are taking the course Pass/Fail, then the cutoff for a pass is ** C - **
or 65 percent.

I will conclude here with a variety of useful information:

FIRST HOMEWORK ASSIGNMENT. Due Friday, January 25 OnLine.

pages 9-12, #1bdf, 2bc, 3bd

page 15, #1abdg, 2acd

pages 19-20, #1abdg, 2bdf

SECOND HOMEWORK ASSIGNMENT. Due Friday, February 1 OnLine.

pages 24-25, #2, 4, 8, 10

pages 29-30, #1bd, 2, 3

page 33, #1bdf, 4a

page 37, #1bdfh

page 42, #1bdf, 2b

THIRD HOMEWORK ASSIGNMENT. Due Wednesday, February 20, 2019 OnLine.

Section 2.1, #1abemq, 2acd, 6ac

Section 2.2, #1adgk, 2ace

Section 2.3, #1ace, 2ac, 5ae

Section 2.4, #1ab, 2

Section 2.5, #1, 2, 6

FOURTH HOMEWORK ASSIGNMENT. Due Monday, March 4, 2019 OnLine.

pages 164-165, #1, 3, 4, 6

pages 169-170, #1bd, 2ad, 3

pages 176-178, #1bd, 2, 4a

pages 182-184, #1bd, 2bd, 3bc, 4bd

FIFTH HOMEWORK ASSIGNMENT. Due Wednesday, March 27, 2019 OnLine.

Section 6.1, #1, 2, 3, 5ac, 6a

Section 6.2, #2, 3a, 4, 5ab

Section 6.3, #1, 2, 4, 6, 7

SIXTH HOMEWORK ASSIGNMENT. Due Monday, April 8, 2019 OnLine.

pages 285-287, #1acf, 2

pages 293-4, #1, 4, 5

pages 300-301, #1acd, 2, 4

pages 304-305, #1, 2, 3

SEVENTH (AND LAST) HOMEWORK ASSIGNMENT. Due Friday, April 26, 2019 OnLine.

pages 319-20, #1, 4bd, 5bd

page 324, #1ae, 2ac, 3ac

pages 329-30, #1, 2ac, 3a

pages 337-8, #1, 2ac, 5

pages 344-5, #1ac, 3ac