# Liang Xiao

## Fall 2015   Math 2410 Elementary Differential Equations

### Class information

• Lectures: Section 001: TuTh 11--12:15 at MSB 315
Section 005: TuTh 2--3:15 at MSB 211
• Instructor: Liang Xiao
• Office Hours: Tuesday and Thursday 10-11am and 1-2pm; or by appointment at MSB 210
• Office Phone: 6-2003
• Email: liang.xiao at uconn.edu
• Textbook: Differential Equations, 4th edition, by P.Blanchard, R.L. Devaney and G.R. Hall, ISBN 0-534-38514-1.

• Quizzes: 20%, the lowest grade dropped
• Midterms: 25% each
• Final Exam: 30%

### Exam times

• Midterms: Oct 6 (Tuesday)  and   Nov 10 (Tuesday).
• Final Exam: December 15 (Tuesday), Session 001 at 10:30-12:30, Session 005 at 1:00-3:00pm

### Logistics

• Homework and Quizzes: You are expected to attempt all the listed homework problems below. You are encouraged to work together on homework. You are welcome to discuss all the questions about them at my office hours. Homework will not be collected, but quizzes will be given on Tuesdays (starting on Week 2 and when there is no midterm) and will be based on previous homework assignments.
• Calculators: You can use calculators and mathematical software when doing homework, but you should be able to do most problems without a calculator. Unless otherwise indicated in class, calculators will not be permitted on quizzes and exams.

### Course Schedule

The course schedule is subject to change.
 Schedule for MATH 2410 -- being updated Week Date Sections Homework Quiz or Exam info 1 9/1,9/3 1.1-1.2 Hw 1: (1.1) 1, 3, 14, 17, 18, 21 (1.2) 1, 3, 6, 9, 17, 28, 31, 34, 39 no quiz 2 9/8,9/10 1.3-1.4 Hw 2: (1.3) 1, 6, 7, 8, 11, 12, 14, 15, 18 (1.4) 2, 5, 6, 11, 14 Quiz I: 1.1-1.2 3 9/15,9/17 1.5-1.6 Hw 3: (1.5) 1, 4, 9, 11, 13, 17 (1.6) 1, 3, 5, 8, 13, 15, 20, 28, 31, 33, 34, 39, 43 Quiz II: 1.3-1.4 4 9/22,9/24 1.7-1.8 Hw 4: (1.7) 1, 3, 5, 11, 15, 19, 21 (1.8) 1, 3, 7, 8, 9, 19, 21 Quiz III: 1.5-1.6 5 9/29,10/1 1.9, 2.1 HW 5 (1.9) 1, 3, 5, 7, 9, 11 (2.1) 1, 2, 4, 15, 16, 19, 23 Quiz IV: 1.7-1.8 6 10/6,10/8 2.1-2.2 Hw 6: (2.2) 1, 3, 4, 7, 10, 13, 15, 16, 21, 27 Midterm I (10/6) 1.1-1.9 7 10/13,10/15 2.3-2.6 Hw 7: (2.3) 1, 3, 5, 7 (2.4) 1, 3, 7, 13 (2.5) 1, 3, 5 (2.6) 3, 4, 5, 7, 8 Quiz V: 2.1-2.2 8 10/20,10/22 3.1-3.2 Hw 8: (3.1) 5, 8, 11, 14, 17, 18, 24, 27, 29, 34 (3.2) 1, 4, 5, 11b, 13b, 14a, 21 Quiz VI: 2.3-2.6 9 10/27,10/29 3.3-3.4 Hw 9: (3.3) 1, 4, 7, 9, 11, 13, 19, 21 (3.4) 1, 5, 7, 9, 10, 15, 22, 23 Quiz VII: 3.1-3.2 10 11/3,11/5 3.5-3.7, 5.1 Hw 10: (3.5) 17, 19, 20 (3.6) 1, 2, 5, 7, 9, 13, 15, 21, 23, 30, 35 (3.7) 3, 5 (5.1) 1, 3, 7, 9, 15, 17 Quiz VIII: 3.3-3.4 11 11/10,11/12 4.1 Hw 11: (4.1) 1, 3, 5, 11, 13, 17, 20, 21, 27, 31, 33, 36, 39 Midterm II (11/10) 2.1-3.7, 5.1 12 11/17,11/19 4.2-4.3 Hw 12: (4.2) 1, 5, 9, 11, 13, 15, 16, 17, 19 (4.3) 1, 5, 9, 13, 15, 21 Quiz IX: 3.6-3.7, 4.1, 5.1 13 Thanksgiving Enjoy your time with family! 14 12/1,12/3 6.1-6.2 Hw 13: (6.1) 1, 3, 7, 9, 11, 15, 17, 27 (6.2) 1, 3, 5, 9, 13 Quiz X: 4.2-4.3 15 12/8,12/10 6.3+review Hw 14: (6.3) 1, 3, 7, 11, 15, 27, 28, 31 Quiz XI: 6.1-6.2 Final week Good luck!

### Homework solutions

I will only provide solutions to even number problems. Be careful about typos though. I will sometimes put in code for Matlab; this will not appear on the exams. But it is always good to know how to use Matlab, right?