Math 217 Spring, 2020

Krantz

**SYLLABUS
AND COURSE INFORMATION**

ORDINARY DIFFERENTIAL EQUATIONS

**Instructors: **Steven G. Krantz and Michael Landry

**Textbook: ***Differential
Equations: Theory, Technique, and Practice,***
**by
Steven G. Krantz,
second edition, Chapman and Hall/CRC Press, Boca Raton, FL, 2015.

**Office:**
103, Cupples I and 204C, Cupples I

**Office Hour:**
Krantz: MWF 10:30am-11:30am. Landry: MWTh 3:00pm-3:50pm.

**Phone:** (314) 935-6712 and (314) 935-9235

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

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

**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 4, March 3, and April 7 from 6:30pm to 8:30pm in rooms to be specified) and a final exam. The final exam is at 10:30am on May 1. 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: 30% (CrowdMark=20%, WebWork=10%)

Midterm I: 20%

Midterm II: 20%

Final Exam: 30%

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 (CROWDMARK) HOMEWORK ASSIGNMENT due Monday, January 27 at 10:00pm

pages 9-12, #1bd, 2bd, 3b

page 15, #1bd, 2bd, 3

pages 19-20, #1bdf, 2bd

pages 24-5, #1, 3, 10, 12

SECOND (CROWDMARK) HOMEWORK ASSIGNMENT due Monday, February 3 at 10:00pm

pages 29-30, #1ac, 3, 6ac

page 33, #1bd, 3a, 4a

page 37, #1be, 3

THIRD (CROWDMARK) HOMEWORK ASSIGNMENT due Monday, February 17 at 10:00pm

page 42, #1bd, 2b, 3a

pages 68-69, #1bdfn, 2bdf

pages 73-74, #1bdf, 2bdf

page 77, #1bdf, 2bd, 4

FOURTH (CROWDMARK) HOMEWORK ASSIGNMENT due Monday, February 24 at 10:00pm

pages 80-81, #1a, 2, 3, 6a

pages 91-92, #1, 2

FIFTH CROWDMARK HOMEWORK ASSIGNMENT due Monday, March 2 at 10:00pm

pages 104-105: #5

pages 164-165: #1, 3, 5, 6

page 169-170: #1bdf, 2ac, 5

SIXTH CROWDMARK HOMEWORK ASSIGNMENT due Friday, April 3 at 10:00pm

Section 4.3: #1ace, 3

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

Section 6.2: #2, 4

SEVENTH CROWDMARK HOMEWORK ASSIGNMENT due Friday, April 10 at 11:59pm

Section 6.3, #1, 2, 4, 6, 8

Section 6.4, #1ace, 2, 6, 7

Section 6.5, #1ac, 2, 5

EIGHTH CROWDMARK HOMEWORK ASSIGNMENT due Friday, April 17 at 11:59pm

Section 8.0, #2, 4acd, 5ad

Section 8.1, #1acf, 2bdf, 3ace

Section 8.2, #1, 2ac, 3b

NINTH CROWDMARK HOMEWORK ASSIGNMENT due Friday, April 24 at 11:59pm

Section 8.3, 2ac, 4

Section 8.4, 1ab, 3ac, 4a