Math 385 - Introductory Differential Equations

Basic Information

• Instructor: Clifton Ealy
• email:clif@math.uiuc.edu
• Course page: http://www.math.uiuc.edu/~clif/math385.html
• Office:326 B Altgeld Hall
• Office Hours: (Tentatively) Monday 9:00-10:00am; Tuesday 10:30 to 11:30am, and Friday 3:00 to 4:00pm
• Class meets: MWF 8:00-8:50am 156 Henry

Required Text

Course Outline

• Chapter 1. First Order Differential Equations (6 lectures)
• Chapter 2. Mathematical Models and Numerical Methods (2 lectures)
• Chapter 3. Linear Equations of Higher Order (14 lectures)
• Chapter 9. Fourier Series Methods (12 lectures)
• Chapter 10. Eigenvalues and Boundary Value Problems (5 lectures)

Grading

Grading policy is summarized in the following table.


What?	When?	How Much?
Homework	due each Wednesday	30%
Midterm 1	Friday, February 16th	20% (lowest midterm dropped)
Midterm 2	Wednesday, March 14th	20% (lowest midterm dropped)
Midterm 3	Friday, April 20th	20% (lowest midterm dropped)
Final exam	1:30-4:30 PM, Monday, May 7th	30%

Homework:

• Homeworks will be assigned and collected in class on Wednesdays.
• Working in groups is permitted.
• The lowest 3 homeworks will be dropped.

Midterms:

• The lowest midterm will be dropped.
• There will be no make-up midterms except in extraordinary circumstances and by permission of the Emergency Dean. A note from McKinley will not suffice.

Homework Assignments

HW #:	due on:	Problems assigned:	Notes:
1	1-24	Section 1.1: 4, 6, 34, 36 Section 1.2: 29, 30 Section 1.3: 1-6	Use a photocopy of p. 26 for the homework from Section 1.3
2	1-31	Section 1.3: 14, 15, 22, 27, 28, 29; Section 1.4: 4, 17, 20, 21, 38, 47, 49, 58; Section 1.5: 2, 5, 14, 35, 36, 37	-
3	2-7	Section 1.5: 39, 40, 41, 42; Section 1.6: 2, 7, 8, 9, 15; Chapter 1 Review Problems; 1, 5, 8, 9; Section 2.1: 6, 8, 17, 18, 19, 32; Section 2.2: 24, 25;	-
4	2-14	Section 1.6: 22, 43, 46, 56; Section 2.3: 29; Section 3.1: 7, 18, 28, 33, 35, 43, 49; Section 3.2: 8, 22, 30, 31; Section 3.3: 3, 8, 21, 24;	-
5	2-21	Section 3.1: 22, 33, 49, 50; Section 3.3: 23, 25, 34, 43, 44, 45, 48, 49, 51, 52, 53;	-
6	2-28	Section 3.4: 1, 2, 4, 5, 6, 11, 12, 15, 17, 18, 22, 23; Section 3.5: 2, 5, 8;	-
7	3-7	Section 3.5: 15, 23, 24, 25, 31, 36, 38, 41, 42, 47, 48; Section 3.6: 1,2;	-
8	3-14	Section 3.2: 7; Section 3.3: 7, 10, 13, 31, 39; Section 3.4: 19, 20; Section 3.5: 3, 10, 17, 49; Section 3.6: 3, 8, 14, 15, 20, 21;	-
9	3-28	Section 9.1: 4, 7, 12, 19, 23, 25, 27; Section 9.2: 6, 7, 9, 10;	-
10	4-4	Section 9.2: 12, 13, 18, 20; Section 9.3: 2, 3, 5, 11, 13; Section 3.8: 2, 3, 4, 7, 9	Note that problems 11 and 13 from 9.3 require knowledge from 3.8
11	4-13	Section 3.8: 15, 16, 17; Section 9.4: 2, 4, 5, 8, 9, 15; Section 9.5: 2, 3, 5, 9, 11;	Note that homework is due Friday not Wednesday
12	4-20	Section 3.8: 1, 5; Section 9.2: 8, 17, 18, 19; Section 9.3: 1, 4, 12, Section 9.4:6, 13 ; Section 9.5: 14, 16; Section 9.6: 2, 4, 7, 11	Note that homework is due Friday not Wednesday
13	4-27	Section 9.7 1, 3, 4, 8, 9, 13, 15; Section 10.1: 1, 3, 4, 7, 8	Note that homework is due Friday not Wednesday, and 7,8 from 10.1 are due next week
14	5-2	Section 9.7: 17, 22; Section 10.1: 7, 8, 11, 12, 17, 18, Section 10.2: 1, 2;	If 9.7 #22 seems difficult, see pp. 184-185




Solutions to the midterms

Exam 1, Exam 2, Exam 3,

Solutions to homeworks #11, #13, #14

Seeing your grades

Score reports are available here .