Math 2214: Introduction to Differential Equations

CRN 85472
Class Policy Sheet
MW 2:30pm - 3:45PM, WLH (Lavery Hall) 340

Instructor: Professor Yuriko Renardy (
Office: Femoyer Hall 406, top floor
Office Hours: MTWTh 10:00am-11:30am. MW 1:30pm-2:15pm. Other times by appointment.

Course Content, Text, Prerequisites, Final Exam Schedule, Homework List, Online Quizzes, Resources:
Please see the Mathematics Department's 2214 course homepage. You are expected to have the textbook on the first day of class. Please check your canvas for memos.

Grades are determined as follows:

  • Online quizzes 20%. There will be one quiz each week starting on Thursday, September 14. Each quiz will start on a Thursday and end on Wednesday. Each quiz will have ten questions from the database which is available in the practice quizzes. The questions are chosen randomly, so different students will have different questions. Online practice quizzes (if you are using a pop-up blocker, you may need to turn it off). You must start a graded quiz by 11 pm on the day of the deadline. Graded quizzes are named YRenardy1, YRenardy2, etc. A table listing how practice quizzes correspond to sections in the text. Rules to follow to avoid technical problems when taking a graded quiz. Please login to the practice quiz system with your Virginia Tech PID and Password, and log off when you are finished practicing. This server has no connection to the testing server, which means that you will not risk losing any graded work if you forget to quit your browser. It also means that these practice problems will not be available when you view past tests. If you want to review your practice quiz problems later, you can mark up to 30 individual problems using the link below each graded practice problem. There is a link to your list of marked problems available anytime you are in the practice problem system. The following is a list of quizzes and their deadlines. The practice quizzes covered in each quiz will be added as the date of the quiz approaches:
    Quiz 1: 9/20
    Quiz 2: 9/27
    Quiz 3: 10/4
    Quiz 4: 10/11
    Quiz 5: 10/18
    Quiz 6: 10/25
    Quiz 7: 11/1
    Quiz 8: 11/8
    Quiz 9: 11/15
    Quiz 10: 11/29
    Quiz 11: 12/6
    Quiz 12: 12/13
  • Written homework assigned from the list is handed in at the beginning of the next class: 20%. Only selected problems will be graded; the rest of the work will not be marked. Please check the correctness of your homework solutions by comparing with the solutions posted. Please do not expect credit for correct answers if no work is shown or if the reasoning is incorrect. If you come in late, hand it in immediately when you come in. You can use any software to check your work or hand-drawn plots (e.g., phase plane plot).
  • Two in-class midterm tests, 20% each, closed book, no calculators, no cell phones. Bring pen or pencil and clean paper.
  • The final exam is 20% and is cumulative. The location is TBA. The first hour is multiple choice, common to all sections, and the time/date takes precedence over other exams. Bring #2 pencil. The second hour is written work. Closed book, no calculators, no cell phones.
  • A final letter grade is determined as follows: 90% is at least an A, 80% is at least a B, 70% is at least a C, 60% is at least a D, and below 50% is an F.
  • An unexcused absence from a scheduled test or final exam results in a zero score; excused absences must be cleared through the office of the Dean of Students before the test. There are no make-up tests; the final exam score replaces an excused test.
  • IMPORTANT: Please check that you are registered for this section.

    Virginia Tech Honor System Information:
    The Undergraduate Honor Code pledge, by which each member of the university community agrees to abide, states: "As a Hokie, I will conduct myself with honor and integrity at all times. I will not lie, cheat, or steal, nor will I accept the actions of those who do." Students enrolled in this course are responsible for abiding by the Honor Code. A student who has doubts about how the Honor Code applies to any assignment is responsible for obtaining specific guidance from the course instructor before submitting the assignment for evaluation. Ignorance of the rules does not exclude any member of the University community from the requirements and expectations of the Honor Code. For additional information about the Honor Code, please visit:

    Student Responsibility

  • Review your prerequisite derivatives and integrals from calculus, and eigenvalues/eigenvectors from linear algebra.
  • Class attendance. Attendance records are taken but not included in the grade.
  • Communication. Participation.
  • Collaboration when permitted.
  • Class hours total 2.5 hours a week. Your independent work is usually more than 7 hours a week. Invest the time.
  • Focus on the mastery of recognizing the type of equation you have, and which method to use, and carry out the calculations through to the end.

    Special needs: Students who need adaptations or accommodations because of a disability (learning disability, attention deficit disorder, psychological, physical, etc.), or have emergency medical information to share with me, or would need special arrangements in case the building must be evacuated, please feel free to meet with me to discuss what can be done to help fulfill the requirements of the class. Also, they may contact the Dean of Students who will see that their special needs are appropriately addressed. Students requiring testing accomodations must work through the appropriate university offices; Any paperwork must be completed and validated prior to the first midterm.