Announcements
**May 13** - Exam #4 and its key are in Resources now. Well, I haven't typed up the solution to #3 yet, but soon...

**May 4** - There will be class on Wednesday, May 11, which will allow us to finish up Laplace transforms. (This is a make-up day for us, since one class was missed a while back, so expect the parking to be good on campus.) The last exam is on Monday, May 16, at 6:30 pm in the usual room. Another option: Tuesday, May 17, at 6:30 pm in room 204. Finally, Exam #3 and its key are in the Resources section of the site.

**April 10** - Exam #3 will be on April 20 and cover sections 4.2, 4.4, and 4.6.

**April 6** - Exam #2 and its key are in the Resources section of the site.

**April 5** - The syllabus below now has updated office hours.

**March 28** - We will have Exam #2 on March 30, however it will cover only sections 3.1, 4.1, and 4.3. Section 4.2 will be pushed to Exam #3.

**March 23** - Unfortunately I have to cancel class today. We'll meet again next week.

**March 11** - Good news: I've decided to add 5 more percentage points to everyone's Exam #1 score. So for example if you got 87% on the exam, you now have 92%. I do not believe any of the problems on the exam were unreasonably difficult; however the argument could be made that the exam was somewhat overly long.

**March 2** - Exam #1 and its key are in the Resources section of the site (link below).

**January 21** - Office hours are now in the syllabus (link below).

**December 8** - The book assumes some familiarity with the hyperbolic functions. You need to know the definitions of sinh and cosh. The definitions of the other four hyperbolic functions follow in a manner analogous to the trigonometric functions: tanh=sinh/cosh, sech=1/cosh, and so on. Also know the derivatives of sinh and cosh, which are easy: sinh'(t)=cosh(t), which is like sin'(t)=cos(t), and cosh'(t)=sinh(t), which is *almost* like cos'(t)=-sin(t). See this page for the full lowdown on hyperbolic functions.