Professor: John Sylvester
Office: Padelford C-556
Office Phone: (206) 543-1158
Monday, Wednesday,Friday 8:30-10:30
The content on this page has been
moved to the course
- Lectures will be recorded Panopto videos, and accompanying
notes, which you can
access Here. I
have tried to put enough detail in the notes that you can read
them without watching the videos if you choose to do that. I
suggest glancing at the notes first. It may help to either print
them or view them in a separate window while watching the
videos. Its a lot easier to page through the notes than to fast
forward and rewind through the video (at least its easier for
- I will be available via Zoom to answer questions and discuss
lectures and homework on Monday, Wednesday, and Friday, at the
time scheduled for class. This is optional, but I suggest you
attend at least once a week. If you prefer, you can email
questions to me ahead of time.
- You should attend Tuesday quiz sections (also via Zoom)
- Exams will be conducted in scheduled
Tuesday quiz sections.
- Exams will use Gradescope.
You will need a computer with a webcam, internet access,
and a way to produce and upload handwritten work (your cell
phone will suffice for uploading written work). If you don't
have access to a computer, try The Student Technology Loan Program.
- You will receive an email when we register you in your
Gradescope class (your quiz section). We will give you
plenty of opportunities to practice answering questions
online before the first exam.
- The information below outlines some of the simplest
ways to take a Gradescope exam.
Assignment -- Log in to Gradescope and begin an assignment,
quiz or an exam.
- Take an Online Exam
using your phone -- login to Gradescope using a browser on your
phone to upload a photo of your handwritten work. Its easier to
read the questions on your computer, but the least complicated way to
upload your answers is by taking photos from within the Gradescope
page running in a browser on your phone. If you can read
the questions on your phone, you don't even need to login to
Gradescope on your computer.
Log in to WebAssign here to read and submit
homework. You will not be able to login
at any other URL. If you google WebAssign, you will not find
the correct site for University of Washington. If you think you
need a "class key", you are using the wrong URL. If you are having trouble logging
in or paying for WebAssign, call the help number 800.354.9706. or
contact me. Don't go to the math advising office; they
cannot help you with WebAssign.
- You will need to buy access ($22.95) and have two weeks to
comply. You don't need to buy any other Cengage products. In
particular, you do NOT need Cengage Unlimited
- The WebAssign payment process can
be a bit complicated. See
Instructions for paying for WebAssign access The
instructions were originally written for math 124. Where
you see references to the Calculus text, you should look
for "Math 307" instead.
- WebAssign Office Hours WebAssign
representatives will hold online office hours specifically
for UW. I'll add links when I get them.
- Textbook Introduction to Differential Equations by
Boyce, Diprima, and Meade :
You can access the etext from your
on our class Canvas page. (link not set yet)
Access is free for 10 days, then it will cost
$25. You pay the bookstore at this link. You must pay
for the book during the 10 day grace period. After that you
can't purchase the ebook. You can read the book online or
download and use the VitalSource reader. You can print up to 10
pages at a time as well. The downloaded version doesn't
If you prefer a paper version, any edition of
Elementary Differential Equations and Boundary Value
Problems or Elementary Differential Equations will
do. A custom version is available through the bookstore. Older
versions are cheaper. You don't need to buy the solutions
manual. The WebAssign homework is different from the homework
problems in the textbook, so the solutions manual will not be
Notes written by Prof. Duchamp, also cover all the material
in the course. They don't contain as many worked examples as
the Boyce Diprima textbook, but explain the modeling in more
detail. They provide a useful supplement to the textbook.
Your grade is determined by how you do relative to the class
as a whole. The median grade will be about 3.0. As long as
exams are online, we will not compute grades on a curve. I guarantee
that 65% of total points will be worth a 2.0 (maybe less, depending
on how hard the exams are). Last Spring and Summer were designated
as "extraordinary circumstances quarters", and I expect Autumn will
also be designated similarly. I believe that everyone at UW is aware
that grades during these quarters should be viewed differently than
usual, so don't obsess over your grades. Just try to learn as much
as you can in spite of the difficult circumstances.
- Homework: 20%
- Best 4 of 5 Quizzes: 20% each
Please don't complicate an already complicated time by engaging in
dishonest behavior. Any cheating will be reported and will seriously
impact your grade. I reserve the right to question you orally about
how you did a problem if I see a suspicious looking answer on your
Homework due dates are listed on WebAssign, and on
by Week Schedule If there is a disagreement, the date on WebAssign
site takes precedence. You should plan to finish at least a day early,
which gives you a day to deal with unforeseen difficulties. If you
email me at 10:59PM on the day the homework is due and tell me you
lost your internet access, I will not be sympathetic.
85 = 100 --- You will get some WebAssign problems wrong for silly
reasons. Some will be WebAssign's fault and some will be
yours. I don't want you to worry incessantly about
homework points, so you only need 85% of the WebAssign
points to get full marks for homework.
Warning: Exam problems will be strongly correlated to
the homework. If you don't know how to do a problem,
ask, even if you have used all your attempts to get
credit for the problem.
- Only Scientific Calculators permitted on exams.
- Exams will be structured so that a calculator is not
necessary for most (usually all) problems.
- Quizzes: I will supply some formulas for each
exam. I will let you know what they will be before the quiz.