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Math 285
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Math 285 - Differential equations

Fall 2017 - La Puma

Syllabus

Some notes for the course.

Also, Notes on Diffy Qs: Differential Equations for Engineers, is a free, online textbook which is a useful supplement to the Zill textbook.
Some notes on so-called Tabular Integration by Parts make integrating by parts easier.
Here are some power series representations of some common functions.

Quiz 1 | answers - due Sep 12
Quiz 2 - due Sep 28
Alt Quiz 2 - Alternative Quiz 2
(with a new Question #1 because I repeated the original Q#1 on both Quiz 1 and Quiz 2; this is optional)
Quiz 2 answers:
#1) y(t) = tan t + sec t
alternate #1) y(x) = (10x + 3)/(x + 1)
#2) x y^2 + x cos x = 0
#3) y = x ln | x | + Cx
#4) y^2 = e^(2x) / (C - 2x)
Quiz 3 - due Oct 3 5
Quiz 4 | answers - due Oct 10 12
Quiz 5 | answers - due Oct 24 26
Quiz 6 | answers - due Nov 9

Test 1 | answers - Sep 28
Test 2 | answers - Oct 26

Test 3 will be passed out on Tue, Nov 28 and will be due Thu, Nov 30.
It will include problems from sections 4.7, 6.1, 6.2, and possibly other sections.

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Homework due for Test 1, Sep 28

1.1: 1-37 odd.
1.2: 1-33 odd.
1.3: 1-7 odd.

2.1: 1-39 odd.
2.2: 1, 5, 9, 13, ..., 49. ("..." means every other odd.)
2.3: 1, 5, 9, 13, ..., 37.
2.4: 1-15 odd; 21-29 odd.
2.5: 1-29 odd.

3.1: 1, 5, 9, 13, 17.

Homework due for Test 2, Oct 26
4.1: 1, 5, 9, ..., 33. 
[Skip this for now--> 4.2: 1, 5, 9, 13, 17.]
4.3: 1, 5, 9, ..., 57.
4.4: 1, 5, 9, ..., 27.
4.5: 1, 5, 9, ..., 69.
4.6: 1, 5, 9, ..., 25.
Homework due at later dates

4.7: 1, 5, 9, ..., 41.
4.9: 1, 5, 9, ..., 21.

5.1: 1, 5, 9, 13; 17-20 all, 21-25 odd, 29, 33, 37, 39.

6.1: 1, 5, 9, ..., 37.
6.2: 1, 5, 9, ..., 21.
6.3: 1-11 odd, 15.

7.1: 1, 5, 9, ..., 37.
7.2: 1, 5, 9, ..., 41.
7.3: 1, 5, 9, ..., 29; 37, 41, 45, ..., 61.
7.4: [To be determined.]

8.1: [To be determined.]

Last Updated: 11/21/2017
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