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## Online Homework

Online homework will be done using WileyPlus.  (Login: https://www.wileyplus.com)

**HOMEWORK ASSIGNMENTS WILL BE MADE AVAILABLE SEPTEMBER 23.**

## Textbook Homework

These assignments will not be turned in and will be not graded; however, certain exam questions are based on textbook homework problems, so understanding the solutions to these problems should help you perform better on the exams. The exercises listed in [brackets] are optional. They often require a bit more thought than the rest of the exercises.

LAST UPDATED: 09 Nov 2016.

Homework Zero     (No due date)
• Section 1.1: 1, 3, 11
• Section 1.2: 1(a), 3(a)
• Section 1.3: 1, 3, 5, 7, 11, 15, 17, 19

 Reading: Chapter 1 Sections 1 - 3. We will not discuss these sections in class, but they introduce several key ideas that we will revisit throughout the course.

Homework 1     (Online HW Due Thu, Oct 6)
• Section 2.1: 1c, 3c, 4c, 6c, 14, 15, 20, 31
• Section 2.2: 1, 2, 3, 4, 6, 9a, 17a, 19a, [30(abcde), 32b]
• Section 2.3: 13, 15, 17a, 18a
• Section 2.4: 1, 5, 14, 15, [27, 28]

 Reading:  Chapter 2, Sections 1-4. We will not spend much time in class discussing 2.3 (Modeling with First Order Equations), but this section gives valuable insight into why exactly we want to study differential equations and find their solutions.

Homework 2     (Online HW Due Thu, Oct 13)
• Section 2.5: 3, 12, 13, [16, 22, 23]
• Section 2.6: 1, 3, 6, 8, 10, 15, [20, 22]
• Section 3.1: 1, 2, 3, 9, 16, 18, 20, 23

 Reading: Chapter 2, Sections 5 and 6. Also read Chapter 3, Section 1.

Homework 3     (Online HW Due Thu, Oct 20)
• Section 3.2: 1, 2, 3, 7, 9, 13, 14, 24
• Section 3.3: 8, 9, 15, 19, 21, 22, 27, 29, [34, 36]
• Section 3.4: 1, 2, 8, 11, 12, 14, 23, 25

Homework 4     (Online HW Due Thu, Oct 27)
• Section 3.5: 1, 6, 8, 9, 16, 17
• Section 3.6: 7, 10, 13, 17

 Reading:  Chapter 3, Sections 5 and 6. Pay special attention to Table 3.5.1 on page 182. We may not have time to deal with each case in class. In 3.6, the emphasis is on learning to correctly use the formulas in Theorem 3.6.1.

Homework 5     (Online HW Due Thu, Nov 3)
• Section 7.1: 1, 5, 7, 11, 12, [13]
• Section 7.2: 2, 10, 22, 23
• Section 7.3: 13, 14, 16, 17, 18, 21

 Reading:  Sections 1, 2, and 3 in the Math 20D Supplement. (These cover the contents of Chapter 7, Sections 1-3 in the textbook, but restricted to the 2x2 matrix case.)

Homework 6     (Online HW Due Thu, Nov 10)
• Section 7.4: 4, 6, 7
• Section 7.5: 1a, 2a, 3a, 15, 16, [24, 27]
• Section 7.6: 1a, 3a, 9, 10, 13(ab), [26, 28(ab)]

 Reading:  Sections 4, 5, and 6 in the Math 20D Supplement. (These cover the contents of Chapter 7, Sections 4 - 6 in the textbook, but restricted to the 2x2 matrix case.)

Homework 7     (Online HW Due Thu, Nov  17  24)
• Section 7.8: 1c, 2, 7, 10, [16]
• Section 7.9: 1, 3, 7, 9

 Reading:  Sections 8 and 9 in the Math 20D Supplement. (These cover the contents of Chapter 7, Sections 8 and 9 in the textbook, but restricted to the 2x2 matrix case.) We will not cover Section 7, which applies to matrices larger than 2x2. (Section 7.9 is optional.)

Homework 8     ( Online HW Due Thu, Nov 24  There is no longer an Online HW 8)
• Section 5.1: 9, 12, 15, 16, 17, 18, 21, 25
• Section 5.2: 1, 6, 7, 9, [21]

 Reading:  Chapter 5, Sections 1 - 2.

Homework 9     (Online HW Due Thu, Dec 1)
• Section 6.1: 3, 5, 12, 15, 21, 23
• Section 6.2: 1, 2, 7, 11, 16, 23

 Reading:  Chapter 6, Sections 1 and 2.

Homework 10     (No due date—No homework is due during Final Exam Week)
• Section 6.3: 1, 4, 10, 14, 16
• Section 6.4: 1, 2, 3, 5, 11
• Section 6.5: 1, 2, 4, 6, 7

 Reading:  Chapter 6, Sections 3 - 5.