Fall 2015, Math 220, Elementary Differential Equations

Course Information

• Course Coverage: This course intends to cover some basic topics of ordinary differential equations at the junior undergraduate level: first order differential equations, second order linear equations, the Laplace transform, systems of first order linear equations and nonlinear differential equations and stability. We tentatively plan to discuss the following chapters and sections: Sec. 1.1--Sec. 1.3 in Chapter 1, Sec. 2.1-- Sec. 2.3 and 2.6 in Chapter 2, Sec. 3.1-- Sec. 3.4 in Chapter 3, Sec. 6.1--Sec. 6.4 in Chapter 6, Sec. 7.1, 7.3 -- 7.6 in Chapter 7 and Sec. 9.1 -- 9.3 in Chapter 9.
 
• Time: MWF: 11:00 --- 11:50 AM
 
• Location: Snow Hall 120
 
• Text: Elementary Differential Equations (10th Edition), by William Boyce and Richard Diprima
 
• Prerequisite: Math 122 and Math 142 or equivalent.
 
• Instructor: Shuanglin Shao
 
• Office: Snow Hall 615
 
• Email: slshao@ku.edu
 
• Office Hour: MWF: 2-3 PM or by appointment.

Grade Policy

• Homework: There will be 10 homework. Each homework consists of roughly 10 problems; only 3 of them will be graded, which will be decided after you turn in homework in class. The lowest homework grade will be dropped. Please mark the following tentative due dates of homework on your calendar: HW 1. (09/04/2015); HW 2. (09/11/2015); HW 3. (09/23/2015); HW 4. (10/02/2015); HW 5. (10/14/2015); HW 6. (10/26/2015); HW 7. (11/02/2015); HW 8. (11/13/2015); HW 9. (11/20/2015); HW 10. (12/09/2015); No late homework.
 
• Quizzes: There will be 5 quizzes in class. Please mark the following tentative quiz dates on your calendar: Quiz 1. (09/04/2015); Quiz 2. (09/11/2015) ; Quiz 3. (10/02/2015); Quiz 4. (10/26/2015); Quiz 5. (11/13/2015)
 
• Midterm: There will two midterms of 50 minutes in the usual classroom meeting time. The first midterm is tentatively scheduled on 10/09/2015; the second midterm is tentatively scheduled on 11/23/2015. If you need to take make-up midterms, please talk with the instructor one-week before the actual midterm time. In order to take the make-up midterms, you need to have a valid excuse; in most cases, a note signed by doctors suffices.
 
• Final Exam: There is a comprehensive final exam in class. The time is 10:30 AM--1 PM on 12/15/2015.
 
• Calculator policy TI-83/84 or similar Graphing Calculators are allowed in both exams and homework. The crib sheet of one-page is allowed in exams but only one-sided.
 
• Students with disabilities If you have a disability for which you may request accomodation in KU classes, please contact the Academic Achievement and Access Center (AAAC), Strong Hall Room 22, (Tel.) 785-864-4064, or (Email.) achieve@ku.edu. Please also see the instructor in advance and privately.
 
• Policy on religious observances All students in this course who plan to observe a religious holiday which conflicts in any way with the course schedule or requirements should contact the instructor as soon as possible to discuss alternative accomodations.
 
• Grade Percentage: homework (30 %) + midterm (20 %) + quizzes (10 %) + final (40 %).

Homework

• HW 1. (Due on 09/04/2015) Sec 1.1: # 15, # 16, # 21,# 24. # Sec 1.2: #3, #4, # 8, # 15, Sec 1.3: #3,#5, #16, # 20, #22.
• HW 2. (Due on 09/11/2015) Sec 2.1: #13,#14,#30,#33. Sec 2.2: #1,#2,#8,#21.
• HW 3. (Due on 09/23/2015) Sec 2.3: #2,#7,#8,#24. Sec 2.6: #2,#4,#5,#17,#18.
• HW 4. (Due on 10/02/2015) Sec 3.1: #4,#8,#12,#20. Sec 3.2: #2,#6,#8,#14,#19,#21.
• HW 5. (Due on 10/14/2015) Sec 3.3: #2 #6, #13, #14,# 18, # 27. Sec 3.4: #2,#4,#6,#8,#14,#16.
• HW 6. (Due on 10/26/2015) Sec 6.1: 5,6,8,16. Sec 6.2: 2,4,6,12.
• HW 7. (Due on 11/02/2015) Sec 6.3: 2,4,7,14,20. Sec 6.4: 2,3.
• HW 8. (Due on 11/13/2015) Sec 7.1: 1,2,4,5,15. Sec 7.3: 2,4,7,16,17. Sec 7.4: 2(a)(b)(c); 4,6.
• HW 9. (Due on 11/20/2015) Sec 7.5: 2+4+6 part (a), 7 part (a),15. Sec 7.6:2+4+6 part (a),7,9.
• HW 10. (Due on 12/09/2015) Sec 9.1: 2+4+6+10 Part (a)(b)(c). Sec 9.2:2,4.