## 21-260: Differential Equations

# Scheduling Information

**Exam Time:**
Lecture 1: 9:30-10:20 (regular class time)
Lecture 2: 10:30-11:20 (regular class time)
**Review Session:**

Time: Sunday 21 September, 6:00-7:30pm.
Place: DH 1112
**Office Hours:** Changes for Exam Week

Check with your TA to find out when you can pick up your graded homework.
**Homework:** You may pick up your graded HW#4 (as well as earlier
homeworks, if you
have not already done so) from your TA during their
office hours.

# Exam #1 Review:

**Read:**

Section 1.1, pp. 1-7.
Section 1.3, pp. 17-20.
Section 2.1.
Section 2.2.
Section 2.3.
Section 2.4, pp. 64-72
Section 2.5.
Section 2.7, pp. 96-103.
Section 3.1, pp. 129-135.
**Exercises:**

Section 1.3: #1, 5, 7, 9, 17, 26.
Section 2.1: #17, 19, 20, 29.
Section 2.2: #1, 3, 13, 15, 16, .
Section 2.3: #3, 4, 6, 9, 18.
Section 2.4: #1, 4, 11, 12, 26.
Section 2.5: #1, 12, 13, 20, 22.
Section 2.7: #3, 21.
Section 3.1: #7, 8, 11, 13, 17.
**Previous Exam Problems:**

All of these problems (or versions of them) were given as 21-260 exam
problems in a previous semester. Available as
a pdf file.