Math 23

Fall 2011

Differential Equations

General Information



Textbook: “Elementary differential equations and boundary value problems” 9-th edition , by W. Boyce and R. DiPrima  available at Wheelock Books



ORC Course description: This course is a survey of important types of differential equations, both linear and nonlinear. Topics include the study of systems of ordinary differential equations using eigenvectors and eigenvalues, numerical solutions of first and second order equations and of systems, and the solution of elementary partial differential equations using Fourier series.

Prerequisite: Mathematics 13.



Instructor and Scheduled Lectures:


Vladimir Chernov

Office: 304 Kemeny Hall

Phone number 646 2421,

blitz (preferred)

Classes: MWF 10-11:05 AM

(x-hour) Th 12-12:50 PM

Class location: Kemeny 008

Tentative Office hours:

Monday 3-4:30 PM,

Tuesday 2-3:30 PM, Friday 3-4:30 PM

and by appointment.

I am very flexible with appointments so do not hesitate to make one if needed.

If on a certain day there will be no class, then there will be no office hours on this day as well.





Course Grade will be based upon the scores on the scores for Homework, Midterm Exams, and the Final Exam as follows:


 Written Homework


Two Midterm Exams

25% each (50% total)

Final Exam

40 %




Exams: There will be two in-class "midterm examinations" and an in-class final examination. These will not be during the regular class times.


Do not make plans to leave Hanover before the end of the final exam week. The exams will not be given earlier to accommodate your travel plans. The exams are scheduled as follows:



1st  Midterm Exam

6-8 PM Monday

October 17 in 

Silsby Room 028

2nd Midterm Exam 

6-8 PM Monday November 7 

in Silsby Room 028

Final Exam

8-11 AM Monday

December 5, in Silsby 028




Written Homework: will be assigned after each lecture. It will generally be due on Wednesday of the week following the week when it was assigned. The Written homework and the due dates can be found here.


Late homework will not be accepted. If you feel there is a very legitimate reason for your homework to be late you should discuss this with the Instructor to your section in advance. Unexcused and missing papers count zero.


Tutorials for the class are 7-9 PM on Tuesdays, Thursdays and Sundays in Kemeny 105. They will be run by the Graduate Student Teaching Assistants Ewa Infeld and Lin Zhao. Please note that the students in the previous years found these tutorials to be very helpful!


Honors Principle:

·       On Exams: No help given or received.

·       On Homework: Collaboration on homework is allowed and encouraged but no copying!

·       In general: when in doubt ask before doing.


Disabilities: Students with learning, physical, or psychiatric disabilities enrolled in this course that may need disability-related classroom accommodations are encouraged to make an office appointment to see your instructor before the end of the second week of the term. All discussions will remain confidential, although the Student Accessibility Services office may be consulted to discuss appropriate implementation of any accommodation requested. At such a meeting please provide your instructor with a copy of a disability registration form, which lists the accommodations recommended for the student by Student Acessibility Services within the Academic Skills Center. The person you might want to contact at the Academic Skills center is Ward Newmeyer, Interim Director of Student Accessibility Services 301 Collis Center - (603) 646-9900.

Student Religious Observances: Some students may wish to take part in religious observances that fall during this academic term.  Should you have a religious observance that conflicts with your participation in the course, please come speak with your instructor before the end of the second week of the term to discuss appropriate accommodations.