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21-260: Differential Equations

Course Description


Instructor and TA's

Course Schedule and Homework

Grading Information

Other Course Policies

Frequently Asked Questions


The course will have three mid-term exams and a final exam. The mid-term exams will be given on

Exam #1: Wednesday 28 September
Exam #2: Wednesday 26 October
Exam #3: Monday 21 November

Note that the third midterm exam will be given on the Monday of Thanksgiving week.

The Exams will be closed book and calculators will not be allowed. If you miss a scheduled exam, a makeup will be given with a significant penalty. In case of documented illness or family emergency or documented University sponsored trips the penalty will not apply.

The final exam has not yet been scheduled. It may take place as late as December 20. If you must make travel plans before the exam schedule is released, you should not schedule your departure from campus before December 21. No student will be allowed to take the final exam early.


Homework will normally be assigned weekly, and turned in on Fridays. You may turn in your homework at the begining or end of Friday's lecture or put it is you TA's mailbox before 3:20pm on the due date. Homework turned in after 3:20 will be regarded as late.

Late homework assignments will be accepted until solutions to the problem set are provided, usually the Recitation after the original due date. The first late homework will be given full credit. Thereafter, the late assignments will be penalized. The second will be given half credit, the third 1/3 credit, and so on. The tenth late homework and any subsequent late homeworks will be given no credit.

Grade Computation

The final grade for the course will be determined by your performance on the homework and quizzes, the three midterm exams, and the final exam. The weights for computing your final average will be:
Homework        15%
Midterms        60%
Final exam      25%

Letter Grades

The general scheme for assigning letter grades will be:

A: > 85, B: 75-84, C: 65-74, D: 50-64, R: < 49

Adjustments (up or down) to this default scheme will be made for assignments throughout the semester. Grade cutoffs for final grades will be computed by averaging the grade cutoffs for each assignmnet