# Fall 2014 - MATH 215/255 - Section 101

# Ordinary Differential Equations

## Instructor

**Kevin Henriot**

**Office:** Mathematics building, M209

**Email:** khenriot (at) math (dot) ubc (dot) ca

**Office hours:** Monday 2:00-3:30 PM, Thursday 10:30-12:00 AM.

**Office hours room:** Leonard S. Klinck building, LSK300B/LSK300C.

## Class schedule

We meet on Mondays, Wednesdays and Fridays from 8:00 to 9:00 am,
from September 3 to November 28, in room 201 of the Leonard S. Klinck building.
## Exams

There are two midterms on October 1 and on November 5,
and the final exam will take place on December 15 at 3:30 PM.
For the final, if a student has an exam conflict or hardship, he should email me
so that an arrangement may be found with the math department.
An exam hardship is defined as three exams within 24 hours,
and an exam conflict can be two exams at the same time,
a religious holiday, or another serious problem.

Midterm 1 solution.

## Homework

Homework is due weekly (outside midterm weeks) on Wednesdays, before the beginning of the class.

Homework 1, solution, September 17.

Homework 2, solution, September 24.

Homework 3, solution, October 8.

Homework 4, solution, October 15.

Homework 5 is due October 22.

## Lecture notes

September 15, Lecture 6.

September 17, Lecture 7.

September 19, Lecture 8.

September 22, Lecture 9.

September 24, Lecture 10.

September 26, Lecture 11.

September 29, Lecture 12.
## References

** Official sources:**

Lebl - Differential equations for engineers.
Freely available here.

Braun - Differential equations and their applications, subsection 1.9.
Used for exact equations (see outline).

**Complementary sources:**

Boyce and di Prima - Elementary differential equations and boundary value problems, any edition.

Logan - A first course in differential equations, 2nd edition (an excellent book, more mathematically demanding).

## Resources