MATH 215/255 Section 105

Elementary Differential Equations I

2014 Fall

Instructor: Dr. Mingfeng Zhao
Office Location: Earth Sciences Building 4122
Office Phone Number: +1(604)-822-2159
Office Hours Location: Leonard S. Klinck Building 300C
Office Hours: Monday & Tuesday 12:30PM--2:00PM or By Appointment
Class Time: MonWenFri 09:00AM-10:00AM
Classroom: Earth Sciences Building  1012
Textbook: Differential Equations for Engineers, Jiri Lebl. You can download this book HERE, or you can buy a paper copy at  For the topic on the nonlinear autonomous planar systems, the Chapter 8 of Jiri Lebl's notes which is not avilable on the above webpage, please download it HERE.
Supplementary Textbook: A First Course in Differential Equations, 2nd Edition, J. David Logan. You can download this book HERE when you are inside the UBC.
Optional Textbook: Elementary Differential Equations with Boundary Value Problems,10th Edition, William E. Boyce and Richard C. DiPrima. (ANY edition is fine)
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
Pre-reqs: One of MATH 101, MATH 103, MATH 105, MATH 121, SCIE 001 and one of MATH 152, MATH 221, MATH 223.
Co-reqs: One of MATH 200, MATH 217, MATH 226, MATH 253, MATH 263.
Last Day to Withdraw without a W standing: September 16, 2014
Last Day to Withdraw with a W standing: October 10, 2014 (course cannot be dropped after this date)
Instructor in Charge: Professor Tai-Peng Tsai


Lecture Notes & Supplements

Homework & Solutions

Exams & Solutions


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 Signup Link:

Piazza Class Link:

Note: I will post all lecture notes, solutions to homework, and midterm exams on this website.

Grading: Homework 10%; Two Midterm Exams Each 20%; Final Exam 50%

Homework: There will be 9 homework totally in this semester. Each homework will be assigned and collected on Wednesday. The first homework will be collected on September 17, 2014. 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 1, 2014(Wednesday) and November 5, 2014(Wednesday).

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.