# MA226 Diff Eqns Summer1 2017

### Announcements

• There will be extra office hours Wednesday June 28 from 5-7pm. Location TBA.
• FINAL EXAM: Thursday, June 29.
• Last semester's exams, including the final are available under Documents.
• You will have the entire class period (150 min) to take the exam.
• The exam will cover sections 1.1-1.9, 2.1, 2.2, 3.1 - 3.3 from before the midterm, with an emphasis on 3.4-3.6, 4.1-4.3, 5.1-5.2, 6.1-6.4.

### Homework

HOMEWORK DUE AFTER MIDTERM
• Chapter 6 Laplace Transforms
• 6.1 - 1-3, 7-14, 15-23 odd, 25
• 6.2 - 1, 3, 4-13, 15
• 6.3 - 11-18, 27-33
• 6.4 - 1-5 we did 6.4.4 in lecture, and we can do #2 in class Tuesday
• Chapter 5 Nonlinear Systems
• 5.1 - 1, 3, 7-15 odd, 26-29
For 7-15b, I didn't do this in class, but try sketching them by hand at the same time as using technology
26-29 are tough, but try them out. We can go over them in class
• 5.2 - 1, 4, 5-13 odd, 15
• Chapter 4 Forcing and Resonance
• Chapter 3 Linear Systems
• 3.4 - 1, 2, 3-13 odd, 19, 20
• 3.5 - 1-7 odd, 11, 13, 17, 19, 21, 22
• 3.6 - 13-29 odd
HOMEWORK DUE BEFORE MIDTERM
• Chapter 3 Linear Systems
• Chapter 2 First Order Systems
• Chapter 1 First Order Differential Equations
• 1.1 - 1-6, 11-14, 17, 18
• 1.2 - 1, 7, 10, 14, 15, 17, 19, 20, 22, 24, 33, 35, 37, 41, 42
• 1.3 - 1a, 3a, 5a, 13, 14, 16
• 1.4 - 1, 2, 5, 6.
Use technology for 1,2. Try 5,6 by hand (but with a calculator).
• 1.5 - 1-8, 13, 15
• 1.6 - 1, 2, 4, 5, 7, 13, 14, 16, 17, 19, 30, 31, 32, 34, 35, 36.
For #13-21, some of the detail in the graphs in the back of the book is unrealistic to sketch by hand.
• 1.7 - 1-9, 13, 19, 20
• 1.8 - 1-11 odd,17,21,23,29,31
• 1.9 - 1-13 odd, 24,25,26a,27

### Significant dates

• May 29 Monday - no classes because of Memorial Day
• May 30 Tuesday - last day to drop without a "W"
• June 2 Friday - makeup day
• June 8 Thursday - MIDTERM
• June 15 Thursday - last day to drop with a "W"
• June 29 Thursday - last day of class and FINAL EXAM