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## Math 20D Spring 2011 Homework Assignments

### 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

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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