Math 345: Differential Equations

Fall Semester 2015

Time: MTWF 12noon - 12:50pm  Location: ENGR E203
Instructor: Gerhard Dangelmayr, WB106
Phone: 491-6452;  e-mail:
Office Hours: Tuesday & Wednesday, 10:30am to 11:30am

Course Description Notes and Files
Homework Assignments Chapter Notes

Prerequisites: (Math 161 or Math 255) and (Math 229 or Math 369).
You should be familiar with everything on this sheet (pdf)

Textbook:  J. Polking, A. Boggess, and D. Arnold: Differential Equations (2nd edition).
Prentice Hall, 2006, ISBN 0-13-143738-0. Available at the University Bookstore.
Supplementary Text (not mandatory): J. Polking, D. Arnold: Ordinary Differential Equations using Matlab.

Grading:  Homework: 25%;    2 In-Class Exams: 20% each;    Final: 35%
Your Grades will be available in "Canvas". Login with your student-ID.
Grading Policy and Results

Homework:  Problems and due dates on the homework assignment page.
Please be aware that turning in homeworks is essential for passing:
if you skip the homeworks, you will need scores of at least 90% in all three exams to get a C !

Exam Dates:
Exam 1 (in-class): Friday, October 2, 2015       
Samples for Exam 1 with Solutions
Exam 2 (in-class): Friday, November 13, 2013   
Samples for Exam 2 with Solutions
Final: Wednesday, December 16, 2015, 7:30am to 9:30am  (in classroom ENGR E203)
Samples: Final of Fall 2010 with Solutions   &  23 Sample Problems for Final, with Solutions

Exams:  2 handwritten pages of notes (= 1 sheet). No calculator, no books.
Final:  4 handwritten pages of notes (= 2 sheets).  No calculator, no books.
Please make sure that you will be able to attend the exams at the given dates and times. 
Exceptions can only be accepted in case of time conflicts with other courses, or serious illness with a physician's certification.

Computer Lab: The availability of computer packages such as Maple, Mathematica, Mathcad and Matlab provides an opportunity to easily conduct numerical experiments and to tackle realistic and more complicated problems. The lab classes will be used with two goals in mind: (a) demonstrate concepts seen in class, (b) allow you to become familiar with computer software to solve differential equations. In this course mainly Matlab will be used. In addition to the packages mentioned above, many illustrative examples can be found at Addison-Wesley's Interactive Differential Equations website. You are encouraged to explore these examples as you proceed in the course.

There will be 2 computer labs in Weber 206:   --  Regular class on other days.
Lab 1:
 Friday, September 4, 2015
Lab 2:
 Friday, September 25, 2015
On these days the class will meet in Weber 206. You have access to the lab at other times as well, as long as it is not in use by another course. In the first lab session you will be given a username and a password for the computers in the lab. Do not share this information with others. More lab information: click here (pdf) and here.










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