Most homework questions will appear within the WeBWorK system, and you will answer most of them directly in WeBWorK. Some problems, to be done on paper and handed in for grading, will be assigned in WeBWorK.
Homework 21—due Tuesday 3 May 11:00 p.m.
All problems are to be done directly in WeBWorK.
Homework 20—due Monday 3 May 9:45 a.m.
All problems are to be done directly in WeBWorK.
Homework 19—due Monday 26 April 9:45 am
All problems are to be done directly in WeBWorK.
Homework 18—due Friday 23 April 9:45 am
All problems are to be done directly in WeBWorK.
Homework 17—due Friday 16 April 9:45 am
All problems are to be done directly in WeBWorK.
Homework 16—due Monday 12 April 9:45 am
All problems are to be done directly in WeBWorK.
Homework 15—due Wednesday 7 April 9:45 am
This homework consists of one three-part question assigned in WeBWork, but you answer it on paper and hand that in at class.
Homework 14—due Monday 5 April 9:45 am
All problems are to be done directly in WeBWorK.
Homework 13—due Wednesday 31 March 9:45 am
All four of the problems are available in WeBWorK. However, two of them are to be done on paper and handed in at class.
Homework 12—due Monday 29 March 9:45 am
All problems are to be done directly in WeBWorK.
Homework 11—due Friday 26 March 9:45 am
All problems are to be done directly in WeBWorK.
Homework 10—due Friday 12 March 9:45 am
(after mid-semester exam)
All problems are to be done directly in WeBWorK.
The subject of this homework is a method for solving nonhomogeneous ODEs and is not covered on the mid-semester exam. However, you may nonetheless want to begin this set before the exam in order to leave enough time to finish it.
Homework 9—due Monday 8 March 9:45 am
This is a short set about the arithmetic of complex numbers and Euler’s identity. All problems are to be done directly in WeBWorK.
Homework 8—due Friday 5 March 9:45 am
All problems are to be done directly in WeBWorK.
Homework 7—due Friday 26 February 9:45 am
All problems are to be done directly in WeBWorK.
Homework Set 6—due Friday 19 February 9:45 am
All problems are available in WeBWorK. But parts of two of the problems are to be done on paper. And one of those requires that you use and print out results from using the Runge-Kutta 4th-order method (RK4) in one of:
- JODE;
- another third-party ODE solver;
- the RK4 routine in my notebook NumericalMethods.nb; or
- a computer program you write and run yourself.
You may submit the last part of the last problem—the one involving a RK4 program—as last as class on Monday 22 February.
Homework Set 5—due Tuesday 16 February 9:45 am (change)
We follow a Monday class schedule that day.
Do only problems #4 and 5. Omit #1–3!
That’s because we lost a day of class to snow (??) and I’ve decided to omit the topic of exact ODEs entirely (That’s what #1–3 were about.)
The remaining two problems #4–5 are to be done directly in WeBWorK.
Homework Set 4—due Friday 12 February 9:45 am
The first problem in this set is to be done on paper and handed in.
Homework Set 3—due Friday 5 February 9:45 am
All problems for this set are to be done directly in WeBWorK.
Homework Set 2—due Monday 1 February 9:45 am
All problems for this set are available in WeBWorK. However, two of the problems, taken from the textbook, have to be done on paper and handed in at class on the due date.
Homework Set 1—due Friday 29 January 9:45 am
All problems for this set are available in WeBWorK. However, the last problem, taken from the textbook, has to be done on paper and handed in at class on the due date.
For that, be sure to observe the requirements about on-paper problems, as detailed on the printed syllabus and on the About page. Here they are again:
- Use 8.5-by-11? paper and write legibly with a pen or dark pencil.
- There should be no “frizzies” along an edge due to removing pages from a notebook (but punched holes are OK).
- Leave at least a 1? right margin on every page, so I can write there.
- (Do not do different problems side-by-side in two or more columns on a page.)
- Arrange your solutions in the order in which they are listed in the assignment, and number them the same way I did in the assignment.
- At the top right of every page, write your name. Below that write “Math 331.1” and the homework set number.
- If possible, staple the pages together in their upper left corner only; do not use any cover or folder.
The last page of what you turn in should be the printout from JODE (or other program) showing the requisite direction field. You can then just write your answer to (b) directly on that printout.