Math 215, Elementary Differential Equations

Section 202, Term II 2012-13, MWF 9:00a.m.- 9:50a.m., Buchanan Room A201

Instructor:   Dr. Jingyi Chen

Office Location: Math Annex 1212, Phone (604)822-6695, jychen@math.ubc.ca.

Course Outline:   Course Outline.

Office Hours:   1:30p.m.- 3:00p.m. Monday and Wednesday

Problem Sets: Set1, Set2, Set3, Set4, Set5, Set6, Set7, Set8, Set9(will not be collected, solve the problems first before read soltutions), Set10, Set11, Set12 (will not be collected).

Homework Solutions: Solution1, Solution2, Solution3, Solution4, Solution5, Solution6, Solution7, Solution8, Solution9, Solution10, Solution11, Solution12.

Lecture notes (Jan 30, 2013, Wednesday) Lecture notes, Lecture notes (Feb 6, 2013) Lecture notes , Lecture Notes (March 25),, Notes (March 22)

Fincal exam (April 23, 2013)

  • Toptics Summary
  • Office hours: 10:00a.m.-12:00pm on April 15 (M), April 18 (Th), April 22 (Tu)
  • Some problems from the review session (April 8): review1

    2nd midterm exam (March 15, Friday)

  • 2nd Midterm solution
  • The exam covers: sections 3.5, 3.6, 3.7 (Mechanical vabrations), 6.1-6.4, 7.1, 7.4, 7.5.
  • The table of Laplace transforms on page 317 in textbook will be given.
  • Practice problems and solutions: Practice problems The practice problems are useful for understanding the course material and preparing for the exam, but they may not be viewed as sample problems for the upcoming exam.
  • Extra office hours on March 14 (Thursday): 2:00p.m.-4:00p.m.

    1st Midterm Exam (February 4, 2013, Monday):

  • Midterm exam solution: Solution.
  • The exam covers Chapter 1, Chapter 2 (excludes 2.7, 2.9) and Section 3.1 - Section 3.4. For modeling with 1st order equations, you only need to know the ones discussed in class: mixing, escape velocity, population dynamics.
  • The exam will be in class, close book, no calculators or formula sheets.
  • Some practice problems with solution: Practice problems, More problems.
  • HW4 will be collected and solution will be posted on this Friday, so you may keep a copy for preparing for the exam.
  • I will hold office hours on Friday (February 1st): 4pm-5pm.
  • University policy on Student Discipline, including policies on academic dishonesty and non-academic misconduct. The penalty for cheating is more severe than most people may think.



  • This page is http://www.math.ubc.ca/~jychen/m308/index.html.

    Here are Jingyi Chen's homepage and UBC Math Dept homepage.

    Last modified: January 2011.