# Differential Equations - Mathematics 23, Winter 2016

## Tentative Schedule and Homework for Edgar Costa's Section 01

Lectures Sections in Text Homework
Monday
January 4
1.1, 1.2, 1.3 1.1: 7, 9, 12, 24
1.2: 12 Hint: do (b) and then (a)
Tuesday
January 5
x-Hour
Wednesday
January 6
1.3, 2.1 1.3: 8, 14
2.1: 15, 17, 30, 33
Due January 13
Friday
January 8
2.2, 2.4 2.2: 3, 8
2.4: 3, 14, 25, 28, 33
Monday
January 11
2.3 2.3: 2, 4, 8
Hint: Solve 8 (c) numerically.
Tuesday
January 12
x-Hour
Wednesday
January 13
2.5, 2.6 2.5: 3, 13, 15
2.6: 2, 14, 24, 28
Use exercise 24 to solve the equation $$(3y^2 + 4xy) + (4xy + 3x^2) \frac{dy}{dt} = 0.$$ Due January 20
Friday
January 15
2.6
Monday
January 18
Martin Luther King Jr. Day
Tuesday
January 19
x-Hour 3.1, 3.2 3.1: 11, 12
3.2: 11, 19, 23, 27, 35, 39
Wednesday
January 20
3.3, 3.4 Due January 27
Friday
January 22
3.2, 3.3, 3.4
Summary of 3.2
3.3: 1, 5, 11, 19
3.4: 2, 13, 14, 23, 25
Monday
January 25
3.5
Extra office hours: 1:35-3:35pm
3.5: 1, 2, 13, 14, 16, 18, 19
Tuesday
January 26
x-Hour 3.6, 3.7
Extra office hours: 12-1pm
Examples 3.5
3.6: 10, 15
3.7: 6
Wednesday
January 27
No class Due February 3
Thursday
January 28
1st midterm
6-8pm
Carson Hall Room L01
Some old exams from other instructors
Friday
January 29
3.7, 3.8 3.8: 9, 11
Monday
February 1
4.1, 4.2 4.1: 2, 6, 8
4.2: 13, 16, 17, 21
Tuesday
February 2
x-Hour
Wednesday
February 3
4.3, 4.4 4.3: 3, 5
4.4: 2, 13
Due February 10
Friday
February 5
7.1, 7.2 7.1: 5, 9
7.2: 6 (c), 15
Monday
February 8
7.3 7.3: 3, 8, 19, 25, 29
Tuesday
February 9
x-Hour 7.4 7.4: 5, 6
Wednesday
February 10
7.5 7.5: 9, 11, 12, 14
Due February 17
Friday
February 12
Winter Carnival
Monday
February 15
7.6 7.6: 3, 5, 7
For each system, only solve and express the general solution in terms of real-valued functions
Tuesday
February 16
x-Hour
Wednesday
February 17
7.8 7.8 2, 3, 5
For each system, only solve and express the general solution in terms of real-valued functions
Due February 24
Thursday
February 18
2nd midterm
6-8pm
Carson Hall Room L01
Some old exams from other instructors
Friday
February 19
5.1, 5.2 Do sufficiently many problems out of 5.1: 1-16
so that you are comfortable with the power series.
These exercises are not to be submitted and they will not be graded
Monday
February 22
5.3, 5.4 5.2: 3, 5, 15(a), 16(a)
5.3: 2,7
5.4: 2, 3, 11, 16
Tuesday
February 23
x-Hour
Wednesday
February 24
10.1 10.1: 1, 5 ,10, 14
Due March 2
Friday
February 26
10.2 10.2: 14, 15
Due Monday March 7
Monday
February 29
10.3, 10.4 10.3: 6
10.4: 16, 17
Due Monday March 7
Tuesday
March 1
x-Hour
Wednesday
March 2
10.5 10.5: 3, 5, 9, 10
Due Monday March 7
Friday
March 4
10.6 10.6: 9 (a), 13 (a)
Due Monday March 7
Monday
March 7
TBD All the previous homework is due today!
Tuesday
March 8
x-Hour
Friday
March 11
Final exam, 3-6 PM Some old exams from other instructors