MATH 215/255 Sections 101 &
104 Ordinary Differential Equations 2015 Fall 
Syllabus 
Instructor: Dr. Mingfeng Zhao 
Office Location: Earth Sciences Building 4122 
Office Phone Number: +1(604)8222159 
Office Hours Location: Leonard S. Klinck Building
300B 
Office Hours: Monday&Wednesday: 02:00PM04:00PM or By Appointment 
Email: mingfeng@math.ubc.ca 
Class Time:

Classroom: 
Textbook:
Differential Equations for
Engineers, Jiri Lebl. You can
download this book HERE, or you
can buy a paper copy at lulu.com. 
Supplementary Textbook: Differential Equations and
Their Applications, 4th Edition, Martin
Braun. You can download this book HERE
when you are inside the UBC. We will follow Braun's
section 1.9 for the topic on exact equations. 
Contents: Ordinary Differential Equations, First/Second/Higher Order Linear Differential Equations, Laplace Transform, Systems of the First Order Linear Differential Equations, Numerical Methods, Phase Plane Analysis. 
Credits: 3 
Prereqs: One
of MATH 101, MATH 103, MATH 105, MATH 121, SCIE 001 and
one of MATH 152, MATH 221, MATH 223. 
Coreqs: One of MATH 200, MATH 217, MATH 226, MATH 253, MATH 263. 
Last Day to Withdraw without a W
standing: September 22, 2015 
Last Day to Withdraw with a W
standing: October 16, 2015 (course cannot be dropped after this
date) 
Instructor in Charge:
Professor TaiPeng Tsai 
Links 



Please Read the Followings 
Piazza: Students are
recommended to sign up the Piazza for this course.
Students can ask and answer questions in the
Piazza. Piazza Class Link: https://piazza.com/ubc.ca/winterterm12015/math215255/home 
Note: I will post all lecture notes, solutions to quizzes and homework, and midterm exams on this website.

Grading: Homework 10%; Two Midterm Exams Each 20%; Final Exam 50% 
Homework: There will be 8 homework
totally in this semester. Each homework will be
assigned and collected on Friday (the
first homework will be due on September 25,
2015). Students can work together on homework,
but must write up your own work independently. A
selection of the problems will be graded, but
the completeness will be counted. The lowest
score will be ignored. 
Midterm Exams: There will be two 50mins midterm exams in class scheduled on October 09, 2015(Friday) and November 13, 2015(Friday). 
Final Exam: The final exam will cover all contents in the entire semester. Please avoid making any travel arrangements that would not allow you to take the final at the scheduled time. 
Resources:
