Homework Assignments Spring 2009:

Homework 1: 1(a), 1(c), 2, 6  Due on Monday February 2.
Hint for (2): Suppose u has a maximum or minimum at an  interior point.
What are u_x, u_y there? what does the pde say about u at that point?
Suppose u has a maximum at one point on the boundary. What possible values
are there for (u_x,u_y) at that point? 
Solution

Homework 2:  Problem 1. Due on Monday February 9. solution

Homework 3:
 2.1(a), 2.2 on page 45 of the Renardy/Rogers 
textbook. Due Monday Feb 16.solution


Homework 3:  2.1 (b) (c), 2.4 on page 45 of the 
text by Renardy\&Rogers. 
Due on Monday February 23. solution.

Homework 4: 1, 3, 6.(b)(c)  Due on Monday, March 2.
Solution.

Spring Break:  Saturday March 7 to Sunday March 15. I will be out of town.

In-class cumulative test Wednesday March 18.

Homework 5:  Due on Monday March 30.Solution

Homework 6:  Problems 1-4 due on Monday April 13.
solution

Homework 6a:  due on Monday April 20.
solution

Homework 7:  Problems 1-3 due on Monday April 20.
The rest of the problems are due on Monday April 27. Note on Problem 
4.Solution

Homework 8:  Problem 1.Solution

Homework 9: Not due. For those interested.

Classes end Wednesday May 6. Final exam details are on the course website. Questions will be based 
on homework problems.