Math 23
Differential equations
Last updated April 4, 2014

## Homework

Homework will be assigned from the text and will usually be due on Monday. Homework assignments will be posted here. We will occasionally make use of The Big Green Ordinary Differential Equation Machine to assist with numerical solutions. Those who know Matlab are welcome to use it.

Please write your section number on your homework and turn all homework in to the box on the basement floor of Kemeny (near room 008) which is labeled "Math 23, Spring 2014, Archer & Wallace".

Homework 1: (Solutions)
Section 1.3: 1-6, 11, 13, 15
Section 2.1: 13, 16, 24 (you can use applets), 35
Section 2.2: 1, 2, 3, 6, 15, 30.
Due Monday, March 31 at 10 am

Homework 2:
Section 2.4: 4, 10, 18, 23
Section 2.6: 4, 6, 14, 16, 18, 22, 28, 30
Section 3.1: 8, 12, 14, 22, 24
Due Monday, April 7 at 10 am

Homework 3: (Solutions)
Section 3.3: 15, 17, 19, 23, 25
Section 3.4: 9, 11, 13, 15
Section 3.5: 9, 11, 13, 15, 31
Section 3.6: 7, 10, 17
Due Monday, April 14 at 10 am

Homework 4:
Section 3.2: 38, 39
Section 3.6: 29
Section 4.1: 18, 25
Section 4.2: 11, 12, 15, 29
Section 4.3: 5
Section 7.5: 1, 5, 7, 14, 16
Section 7.6: 1, 5, 13, 15
Due Monday, April 21 at 10 am

Homework 5:
Section 7.8: 3, 5, 7, 17 (a)-(d), 18 (a)-(d)
Section 9.1: 3, 5
Section 9.2: 5
Section 9.3: 5, 17
Due Wednesday, April 30 at 10 am

Homework 6:
Section 5.2: 5, 8, 16, 21
Section 5.3: 3, 6, 12
Section 5.5: 6, 9, 12, 14
Section 5.6: 8, 15, 17, 21
Due Friday, May 9 at 10 am

Homework 7:
Section 5.7: 9
Section 10.2: 16, 27
Section 10.3: 8, 17
Section 10.4: 26 (a)-(b), 37
Section 10.5: 5, 6, 12, 17
Due Monday, May 19 at 10 am

Optional Extra Credit Homework Assignment
Due Wednesday, May 21 at 10 am
In order to get this graded, you should turn it in separately to the box marked "Extra Credit" below the regular homework box.