## Thursday, 29 November 2007

### WKB solution for problem 7.6

A WKB solution (courtesy Peter Howell) for problem 7.6 has now been posted.

## Wednesday, 28 November 2007

### Solution Set 7 posted

Solution set 7 is now posted. Note that there is a separate Maple file that goes with this solution set.

## Friday, 23 November 2007

### Corrected version of Solution Set 6 posted

I corrected a few typos in Solution Set 6 and posted the revised version.

## Thursday, 22 November 2007

## Thursday, 15 November 2007

## Friday, 9 November 2007

### Corrected version of Solution Set 4 posted

I've posted a corrected version of Solution Set 4. It includes additional details on various points in (for example) problems 2 and 3.

## Thursday, 8 November 2007

### Steepest Descents

As I warned everybody in class, the method of steepesct descents can be kind of tricky. It's one of the hallmark ideas of this class because it generalizes both Laplace's method and stationary phase.

Here is an example posted online that might help.

The book by Bender & Orszag has many other steepest decents examples and I

If there is time, I'll try to present another example of steepest descents in lecture before the end of the term. As all of you know, we are very much restricted by the limited time we have.

Here is an example posted online that might help.

The book by Bender & Orszag has many other steepest decents examples and I

*strongly encourage*that you study them. (In fact, I strongly encourage that you purchase this book because you'll be referring to it many times in your mathematical career.)If there is time, I'll try to present another example of steepest descents in lecture before the end of the term. As all of you know, we are very much restricted by the limited time we have.

### Solution Set 4 posted

I've posted the solution set for the 4th problem sheet. The link is on the left.

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