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:

1. The Math Department mandates that we have three midterms. They are scheduled on February 4, March 3, and April 7 from 6:30pm to 8:30pm in the evening. You can find out what room to go to and what your seat assignment is for each exam by logging on, on the morning of the exam, to http://www.math.wustl.edu/seatlookup.

2. To access WebWork, you need to go to webwork.wustl.edu and select Math 217. Your username and your password are both your student ID number. The password should be changed as soon as possible.

3. The Assistants to the Professor for this course are Mary Barker (marybarker@wustl.edu), Naga Vempati (m.vempati@wustl.edu), and Nathan Wagner (nathanawagner@wustl.edu). They will hold recitation sections on Thursdays. If you have a strong attendance record at these sessions then you will get a 3 percent bump to your final course grade.

4. I do not allow calculators during exams.

5. Your exam and homeworkgrades may be found on an OnLine system to be announced.

6. Disability Resources: Special accommodations for exams are offered to students who are registered at Disability Resources (DR). Information about DR may be found at http://disability.wustl.edu. Students who desire to take advantage of this service should visit DR early in the semester, well before the first exam.

8. This Web page is the lifeline of the class. Homework assignments, additional course information, corrigenda, exam information, and other announcements will all be posted here. Bookmark the page and refer to it frequently.


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

Practice Exam for First Midterm




Solutions to Practice Exam for Midterm 1




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

Solutions to CrowdMark Homework 1




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

Solutions to CrowdMark Homework 2




Solutions to Midterm 1




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

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

pages 91-92, #1, 2

Solutions to CrowdMark Homework 3




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

Solutions to CrowdMark Homework 4




Midterm 2 Practice Exam




Solutions to Midterm 2 Practice Exam




Solutions to Midterm 2




Solutions to CrowdMark Homework 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

Solutions to CrowdMark Homework 6




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

Practice Final Exam




Solutions for Practice Final Exam




Solutions to CrowdMark Homework 7




Solutions to CrowdMark Homework 8




Solutions to CrowdMark Homework 9




Final Exam




Solutions to Final Exam