## Ordinary Differential Equations Fall 2006

### Instructor: Bard Ermentrout

#### Office Hours: MWF 2:00-3:00 PM Office: Thackeray 502 Phone: 624-8324 EMAIL: bard+@pitt.edu WWW: http://www.pitt.edu/~phase

All homework is due the week following the assignment. Grades will be based on:
• Written homework 30%
• Projects 20%
• 2 Exams 50% (Midterm and Final)

The book is Elementary Differential Equations and Boundary Value Problems The authors are Boyce and DiPrima

Please note This is the eighth edition!

### Syllabus:

• 8/28: 1.1; 8/30,9/1:2.1

Homework due: Sept 8: 1.1:15-20,23,24,26,29,30;2.1:13,15,16,31,32

Here is a handout for using XPP and doing some of the computer problems How to plot

• 9/6-9/8:Homwework 2.2:1,5,8,9,10,17,31,37,36; due Sep 15
• 9/11-9/15: sections 2.3, 2.4,2.5.

HW: 2.3:2,9,19,29,32; 2.4: 1,3,5,7,14,15,23,27,28; due Sep 22

• 9/18-9/22: section 2.6,2.7 HW: 2.5: 1,3,4,8,11,13,20,25; 2.6:1,3,5,9,13,15,18,19,25; due Sept 29
• 9/27-9/29: 3.1,3.2,(3.3) HW: 3.1:1,7,9,12,17,20,23,28; 3.2:1,2,4,7,12,13,16,17,23,28,29; due Oct 6
• 10/2-10/6: (3.3-3.5) HW: 3.3: 1,4,6,10,15,21; 3.4:7,11,12,17,21;3.5:1,4,8,12,14,18,23,38 (Due Oct 13)
• 10/9-10/13: No class Friday 13th; (3.6-3.8) HW: 3.5:1,4,8,12,14,18,38;3.6:1,2,9,13;3.7:1,5,7,13
• First exam - probably the week of the 16th
• 10/16: Review; Sample exam! 10/18: Exam I; 10/20: 4.1 Read pages 3-5 of this handout
• ans1 ans2 ans3 ans4
• 10/23-10/27: 4.2-4.4,7.1,7.2: HW due Oct 27: Handout p3:1,2,3; Handout p5,6:1,2,3; 4.2:11,18,21;4.3:1 (see 4.2,11)
• 10/30-11/3: 7.2-7.4; HW Due Nov 3:7.1:1,4,6,23; 7.2:1,4,10,23,25
• 11/6-11/10: 7.5-7.6; HW Due Nov 10:7.3:1,4,15,18,21;7.4:2abc,6
• If you dont want to use software to draw direction fields, here are some java applets on the web:
• Linear systems analysis with XPP
• HW Due Nov 17 7.5:1,2,5,7,11,15,16,20,24,25,27,31,7.6:1,3,5,13,14,28
• 11/13-11/17: 7.7-7.8 HW due dec 4 7.7 1,3,5; 7.9: 3,12
• 11/27-12/1: 9.1-9.3 HW due Dec 8 9.1:1,3,5,6,13; 9.2:1,4,5,9,17; 9.3: 1,2,5,10
• HERE IS THE FINAL!!!