**Math 256: Introduction to differential equations **

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Information for Dan Dugger's section, Winter 2012

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** Instructor: ** Daniel Dugger

** Office:** 317 Fenton

**E-Mail: ** ddugger@math.uoregon.edu

**Phone: ** (541)-346-4790

** Office Hours: ** M 2-3, Tu 1-2, W 10-11, F 1-2.

** Textbook: ** Elementary differential equations, 9th edition,
by Boyce and DiPrima.

** Syllabus: ** We will cover roughly chapters 1-4 and 7 of the
textbook.

** Grades: **
There will be FOUR midterms, held every other Friday starting on
January 20th: so the dates are January 20, February 3, February 17,
and March 2.

Grades will be calculated based on the following percentages:

Homework: 20%

Midterms: 13% each, for a total of 52%

Final: 28%

# The final exam is Monday, March 19, 10:15am--12:15pm, in 306 Deady.

# Review sheets

Review sheet for midterm #1
Review sheet for midterm #2

Review sheet for midterm #3

Review sheet for midterm #4

Review sheet for final exam . You are not responsible for
problems 31 through 37.

# Homework assignments

Homework will be due every Wednesday, starting 2nd week.
Here are
instructions for using Webwork.
You can go directly to Webwork by clicking
here.
You can find a useful table of integrals
here. Just click on the list corresponding to the kind of
function you want to integrate.

Assignment due 1/18:

- HW1 on Webwork.
- The following problems from the textbook (to be done on paper and
handed in):
- Section 1.3: #18,20
- Section 2.2: #31, 32, 33 (only do parts a and b on these three)
- Section 2.5: 9, 10.
- Problems 2-5 on the following
worksheet.

Assignment due 1/25: No Webwork this week. Hand in the following
textbook problems:

- Section 2.4: 1-4, 7, 8, 10, 13, 15.
- Section 2.3: 1.

Assignment due 2/1:
- HW3 on Webwork.
- The following problems from the textbook (to be done on paper and
handed in):
- Section 2.3: #4
- Section 2.6: #1-3, 16, 21.

Assignment due 2/8:
- HW4 on Webwork.
- The following problems from the textbook (to be done on paper and
handed in):
- Section 3.1: #1,2,22.
- Section 3.2: #1,2,5,7,8,24.

Assignment due 2/15:
- HW5 on Webwork.
- The following problems from the textbook (to be done on paper and
handed in):
- Section 3.4: #4, 18, 23, 24.
- Section 3.3: #3, 4, 5, 19.
- Section 3.5: #1, 3, 14.

Assignment due 2/22:
- Section 3.7: #1, 2, 3, 5, 6.

Assignment due 2/29:

- Section 3.6: #13, 15.
- Section 3.7: #11, 17, 24.
- Section 4.2: #11, 12, 14.
- Section 4.3: #1, 6, 9, 17.
- Section 7.1: #1, 5.
- Section 7.2: #1, 21, 22.

Assignment due 3/7:

- Section 7.5: #1, 2, 3, 8, 11.
- Section 7.6: #1, 2, 4, 6, 14.

Assignment for 3:16: This last assignment will not be handed in, due
to dead week. But you are responsible for the problems below:

- Section 7.8: #1, 3.
- Section 7.9: #1, 3, 7.
- For Section 7.1, #22, 23: Write down the systems of differential
equations, the initial values, and find the solution.

# Video lectures

There will be no class on Friday, January 13. Instead, watch the
following lecture: