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## Math 20D Spring 2011

Homework Assignments

#### Note: These homework assignments are subject to revision during the term.

Please check this page regularly for updates.

### Homework 1

`
Due Friday, April 8
`
**Section 1.1:** 8, 10, 15-20, 21, 24
**Section 1.2:** 4, 9, 10, 12, 13
**Section 1.3:** 4, 11, 14, 16, 20
**Section 2.1:** 13, 16, 23bc, 31
**Section 2.2:** 1, 5, 15ac, 18ac, 31ab
**Section 2.3:** 1, 9, 13, 16
**Section 2.4:** 1, 5, 13, 15, 25

For Fun:diff eq in the news
japan reactor math models

### Homework 2

Suggested reading:
M20B complex variables supplement.
Read about complex exponentials carefully.

`
Due Friday, April 15
`
**Section 2.5:** 4, 13, 20, 23
**Section 2.6:** 4, 8, 10, 21, 22
**Section 3.1:** 7, 13, 17, 21
**Section 3.2:** 4, 7, 13, 14, 26

`
`

**Exam 1 on ***Monday, April 18* covers Sections 1.1 - 1.3, 2.1 - 2.6 and 3.1 - 3.2

BRING A BLUE BOOK

### Homework 3

`
Due Friday, April 29
`
**Section 3.3:** 1, 9, 10, 23
**Section 3.4:** 7, 13, 20, 24, 28
**Section 3.5:** 3, 4, 14, 27
**Section 3.6:** 2, 6, 7, 15
**Section 3.7:** 6, 7

### Homework 4

`
Due Friday, May 6
`
**Section 7.1:** 1, 4, 5, 7
**Section 7.2:** 2, 11, 21d, 23, 24
**Section 7.3:** 2, 8, 13, 18, 19
**Section 7.4:** 6ab

### Homework 5

`
Due Friday, May 13
`
**Section 7.5:** 1a, 2a, 10, 16 (Omit the sketching for 1 and 2, but be sure to describe how solutions behave as *t → ∞*)
**Section 7.6:** 5, 6, 9, 10 (Omit the sketching, but be sure to describe how solutions behave as *t → ∞*)

**Exam 2 on ***Monday, May 16* covers Sections 1.1 - 1.3, 2.1 - 2.6, 3.1 - 3.7 and 7.1 - 7.6,
with an emphasis on Sections 3.3 - 3.7 and 7.1 - 7.6

BRING A BLUE BOOK

### Homework 6

`
Due Friday, May 27
``
`**Section 7.9:** 3, 8, 14
**Section 5.1:** 3, 10, 14, 26
**Section 5.2:** 2, 7, 8

### Homework 7

`
Due Friday, June 3 (note we deleted Ex 4 in sec 6.4)
`
**Section 5.3:** 2, 5, 6
**Section 6.1:** 1, 7, 8, 16
**Section 6.2:** 4, 9, 21, 22
**Section 6.3:** 4, 10, 14, 16
**Section 6.4:** 5, 16ab

**The Final Examination from 11:30pm to 2:30pm on ***Friday, June 10* is
comprehensive and covers

Sections 1.1 - 1.3, 2.1 - 2.6, 3.1 - 3.7, 7.1 - 7.6, 7.9, 5.1 - 5.3 and 6.1 - 6.3

** Sec 6.4 will not be on the exam.
**

You do not need to know the definition of Transfer functions or understand them
for the exam**
**

You should remember the Laplace transforms of 3 functions
(eg on your crib sheet): e^{ at}, cos wt, sin wt.
Bring a BLUE BOOK
** Office Hours During Finals week: **

Mon: 1-2 Mr. Rodriguez

Tues: 10-11 Mr. Nelson

Weds: 10-12 Mr. Kasa , 3.30-4.30 Prof. Helton

Thur: 10-11 Mr. Rodriguez, 2-3 Mr. Nelson

Fri: The Exam

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