Math 3D Discussion Sections 40 & 41 (Winter 2005)
Elementary Differential Equations

Homework 10 Solutions Posted
Posted on Mar. 21, 2005, 1:25pm

I just finished writing up solutions to Homework 10. Although you don't have to turn in this homework, I highly recommend that you look this over and do the problems, as the material will be covered on the final.

Also, the work I provided here should answer some of your YAQ questions. -- Paul

Homework 9 Solutions Posted
Posted on Mar. 21, 2005, 12:48pm

I just finished writing up solutions to Homework 9 and will post some solutions to Homework 10 problems soon.

Optional Quiz 8 Posted
Posted on Mar. 16, 2005, 2:27am

I'm posting an optional quiz (for your own study purposes). Note that this does not replace making an appointment with me if you are making up a quiz.

Homework 8 Graded
Posted on Mar. 15, 2005, 11:26am

I just finished grading homework 8. You'll all be getting a big bundle of papers today. :-) -- Paul

Homework 8 Solutions Posted
Posted on Mar. 14, 2005, 11:24pm

Homework 8 solutions are posted. I hope to get it graded by tomorrow. At least you'll have solutions to study from now. -- Paul

Homework 7 Graded, Homework 8 Solutions Coming Soon
Posted on Mar. 14, 2005, 3:52pm

I finished grading Homework 7 this morning. Homework 8 solutions will be posted tonight, and hopefully I'll get it graded by class tomorrow.

Please remember that unless you attend the optional class on Thursday, your final homework is due tomorrow. -- Paul

Midterm 2 Solutions Posted
Posted on Mar. 13, 2005, 11:31pm

The solutions to Midterm 2 are posted below. Some parts don't have both A and B completed when they were similar. I'm sorry, folks, but I'm just out of time to do those problems as well. Now, onward to grading and YAQ's.-- Paul

Midterm 2 Solutions will be Posted Tonight
Posted on Mar. 13, 2005, 6:43pm

I'm writing up solutions to the second midterm now, and I hope to have them posted tonight. I'm sorry for the delay.

Also, I hope to get caught up with grading by Tuesday. I'd like to remind you all once more that unless you attend the optional class on Thursday, your homework is due on Tuesday. So far, only five-to-ten people have indicated (by RSVP) that this is their intent. -- Paul

Laplace Transform Self-Quiz Posted
Posted on Mar. 10, 2005, 3:22am

I posted a short "self-quiz" on Laplace transforms. Use this self-quiz to test your memory of the most important Laplace transforms and properties. I'd highly recommend doing this regularly in preparation for your final. -- Paul

Quiz 7 Solution (to be) Posted
Posted on Mar. 10, 2005, 1:58am

Quiz 7 solution will be posted tomorrow/later today. -- Paul

Quiz 6 Solution Corrected
Posted on Mar. 10, 2005, 12:20am

I just corrected the solution to Quiz 6. Homework 6 is graded, and I hope to have homework 7 graded by tomorrow, too. -- Paul

Homework 6 and 7 Solutions Posted
Posted on Mar. 6, 2005, 9:57pm

I just posted solutions to homeworks 6 and 7. Hopefully this means I'll get it graded soon, too. :-) -- Paul

Quiz 6 Solution Posted
Posted on Mar. 2, 2005, 10:45pm

I created the links to Quiz 6 and its solution. I'll unbreak the links after 4:00 PM tomorrow. -- Paul

Quiz 5 Solution Posted
Posted on Feb. 24, 2005, 3:40pm

I just posted the solution to Quiz 5. Also, I hope to post some help on Laplace transforms. -- Paul

Homework 6 Postponed
Posted on Feb. 22, 2005, 12:36am

Homework 6 is now due on Thursday. Please don't forget about the quiz that's this Thursday, too!!!!

Homework 5 Solutions Updated
Posted on Feb. 17, 2005, 12:36am

I corrected my error on the second problem. I accidentally solved with the wrong IC. Deduct one point from my score.

Homework 5 Solutions Posted
Posted on Feb. 17, 2005, 12:36am

Homework 5 solutions are posted. Since they are now posted, I can no longer accept late homework for this assignment.

Homework 5 Solutions Coming Soon
Posted on Feb. 16, 2005, 8:59pm

Homework 5 solutions will be posted tonight. Stay tuned!

Yeehaw
Posted on Feb. 14, 2005, 5:21am

Everything is graded. I'm bringing everything I have with me to class on Tuesday, so please do show up. :)

Also, Homework 5 will be due as scheduled on Tuesday, so please plan accordingly. It is important that we keep pace, especially as your midterm is on Friday.

Homework 4 Solutions Posted
Posted on Feb. 13, 2005, 6:23pm

Tada. Es werde Licht!

Homework 3 Solutions Posted
Posted on Feb. 13, 2005, 5:44pm

Homework 4 solutions coming soon.

Quiz 4 Solutions Posted, and other news
Posted on Feb. 13, 2005, 4:36pm

I just posted the solutions to quiz 4. Homework solutions will be coming soon, either today or tomorrow, or more likely a combination of both. On a minor note, I changed the formatting this page to make it more readable. -- Paul

Midterm 1 Solutions Updated, and more help on Judicious Guessing
Posted on Feb. 6, 2005, 1:16pm

I just corrected an error in problem 3A on the midterm. Also, I'm posting a writeup with (I hope) really good explanations of some trickier "judicious guessing" problems. Please look it over. I think the explanations are good and should help with some of the problems where there are trig functions on the righthand side.

Also, I think I came up with some good tricks on the method. Again, please read the writeup. All these downloads are here.

Quiz 3 Solutions Posted
Posted on Feb. 3, 2005, 9:01pm

I just posted Quiz 3 and its solutions. I plan to have solutions to your homework posted soon. Also, Dr. Guidotti helped me find an error in my posted solution to Midterm 1, so I'll get that corrected and reposted tonight.

Midterm 1 Solutions Posted
Posted on Jan. 30, 2005, 10:20am

I've posted detailed solutions to your first midterm. Please notify me if there are any errors. Also, I'll be sending an email to address the most common YAQ questions later today or tomorrow.

Homework 2 Solutions Posted
Posted on Jan. 25, 2005, 1:07pm

I'm posting solutions to the two homework problems I graded for homework two. Please see the download section after class today. (Of course, I won't "unbreak" the link until then. ;-)

Homework 1 Solutions Posted
Posted on Jan. 20, 2005, 1:45pm

I'm posting solutions to the two homework problems I graded for homework one. Please see the download section.

Quiz 2 Solutions (will be) Posted
Posted on Jan. 20, 2005, 9:41am

I'm creating the links to the second quiz and its solution now. I'll "unbreak" the links after class today.

In other news, I'm not quite finished grading the homework, but overall, the level of work shown has been good. I have a few comments: There's no reason to try to cram all your work into a tiny space. Some of these problems are complex, and they can take some time (and space) to figure out. Showing your work is important, both for grading, and more importantly, to allow you to work carefully and catch your mistakes. I personally recommend working on scratch paper first and then rewrite your final answers afterwards. Lastly, please do staple your work when you hand it in. Thanks -- Paul

Correct Quiz 1 Solutions Are Posted
Posted Jan. 18, 2005, 10:25am

It looks like I accidentally posted an outdated, uncorrected version of Quiz 1 and its solutions. I just updated the files, which can be found in the downloads section below. I'm sorry for any inconvenience this may have caused.

Also, I have updated the syllabus to include the tutoring center location and my hours there. Also, please note that I correct the syllabus to note that you should email both Dr. Guidotti and myself with your YAQ questions. (This is a change from "either or".)

Quiz 1 Solutions Are Posted
Posted Jan. 13, 2005, 4:32pm

Quiz 1 solutions are posted.

Tutoring Center Hours
Posted Jan. 12, 2005, 8:10am

The math tutoring center (Rowland Hall 414) schedule is being set as we speak, and it should be open starting next week. I will be working from 10:00am to 12:00 noon on Thursdays, if you'd prefer to work with me. Otherwise, it should be open Monday through Friday from 8:00am to 4:00 or 5:00pm.

Quick Update
Posted Jan. 6, 2005, 1:32pm

I emailed a copy of the discussion section syllabus to everyone on the mailing lists. BTW, one user has a full inbox.

First Class Announcement and Details
Posted Jan. 5, 2005, 9:27pm

While Dr. Guidotti's class won't meet until this Friday (January 7), we will meet tomorrow as scheduled. I have decided to set my office hours as Tuesdays and Thursdays from 12:30pm to 1:30pm or by appointment. If you plan to come to an office hour, I'd recommend that you email me in advance so I can plan to be there for sure.

Otherwise, I will be working in the Math Tutoring Center for two hours a week. (Those hours will be determined and announced later.) I'd assume that the math tutoring center schedule will eventually be posted here.

The syllabus is finished and posted in the downloads section below.

Test Announcement
Posted Dec. 2, 2004, 1:42pm

Test text.