# STRAUSS PDE HOMEWORK SOLUTIONS

Please ask if you would like to see the solutions. The TA also made a drop box. Problem Let u be the solution of Problem 1 of Section 2. Or read chapter Th , Th afternoon office hour had to be changed due to some committee rescheduling Some solutions Below we post solutions for some of the homework problems. Even though homework counts for comparatively little for the overall grade, it is extremely important that you do, or, at least, seriously try to do them.

In order to make it easier for you to print out the assigments, I put the newer assignments on a new page. Th , F The problems in the midterm will be similar to homework problems or practice exam problems. Also prove identity 5 on page if you were not in class: If in doubt, ask the TA or me.

## CHEAT SHEET

You may also want to have a look at old homework assignments. We have a dropbox in the basement of APM.

ThTh afternoon office hour had to be changed due to some committee rescheduling Some solutions Below we post solutions for some of the homework problems. Also look at the hints at the end of the problem9.

Solutions HW problems Ch 9. There will be a drop box in the basement of the APM building. Problem Let u be the solution of Problem 1 of Section 2.

HURSTMERE FOUNDATION SHOW MY HOMEWORK

Below are some solutions of homework problems, and a practice exam so far only with problems from Section 7. Compare this with the causality principle for solutions of the wave equation which implies that information only travels with finite speed c.

Homework assignments Homework is to be turned in on Fridays unless noted otherwise by 5pm. Try first, for a while, even if you do not know right himework how to tackle the problem.

## MATH4220 – Partial Differential Equations – 2015/16

ThF Otherwise, these exercises and solutions do hmoework really help you! However, I will not expect you to copy lots of specialized formulas such as explicit power series for Bessel functions, explicit spherical harmonics table on pageidentities on pageexplicit formula for Legendre polynomials and associated Legendre functions and normalizing constants on page etc.

You will be allowed to use a cheat sheet, regular paper size, both sides OK, but no calculators or other books. I have also added one more practice problem as of Saturday evening. Solutions HW problems Ch You can get from this the full Fourier series for x.

The material will go over what we have covered from Sections 7 and 9. We may or may not be able to srauss solutions for the missing problems in time.