### Online Assignments

Online homework is accessed via the Camosun WeBWorK server.

I will be sending an email to the email address we have on file for you during the first week of classes with the URL for this year's Math 252 section and your login information. If you have not received this email in the first week, it is likely that the email address on file is incorrect or outdated, so please send me an email from your current account so that we can get you logged in ASAP!

Alternatively, you can log on using your Camosun student number as your ID (with the leading C and then seven digits), and use that same number for your password.

### FAQ for WeBWorK

Here is my FAQ for the WeBWorK online homework system.

### Homework (Recommended Problems)

Here are the recommended Homework problems for the

These exercises are not to be handed in for marking. Instead, you are encouraged to work on these selected exercises as part of your studying for the course.

### Homework Hints

#### Section 2.3: Linear First-Order DEs

• Question 19: Here's a hint: the fraction (x+2)/(x+1) = (x+1)/(x+1) + 1/(x+1) = 1 + 1/(x+1). To see this identity in better formatting, check out Wolfram|Alpha's version.

#### Section 4.6: Variation of Parameters

• Question 11: Here's a hint: e2x/(1+ex) = ex-ex/(1+ex). You can either do it via long division or by just messing about with the original fraction (see me and I'll show you how.) To see this identity in better formatting, check out Wolfram|Alpha's version.
• Question 13: Here's a hint: for the integral of e2xsin ex dx, perform the substitution y=ex first. Then your integral becomes the integral of y2 sin y dy, which can be done with parts.

### Textbook Errors

None found as of yet.

 Many course materials are available in the Adobe Acrobat PDF file format. To read and print PDF files, you will need to install the free Acrobat reader.