21 B
Mathematics Math21b Spring 2018
Linear Algebra and Differential Equations
Course Head: Oliver Knill
Office: SciCtr 432

We follow strictly the Harvard Honor code.

First Midterm

The first exam took place Tuesday, February 27, 2018 in Hall B from 7 PM to 8:30 PM. We had a review on Sunday 2/25/2018 in ScienceCtr_Hall C from 7PM to 8:30 PM. The average of the exam was a notch below 84, the standard deviation 8.

Hourly 1 Solutions

Here were some practice exams with solutions.
Practice exam 1 [PDF]Solution 1 [PDF]
Practice exam 2 [PDF]Solution 2 [PDF]
Practice exam 3 [PDF]Solution 3 [PDF]
Practice exam 4 [PDF]Solution 4 [PDF]
Practice exam 5 [PDF]Solution 5 [PDF]
Practice exam 6 [PDF]Solution 6 [PDF]
Practice exam 7 [PDF]Solution 7 [PDF]
Practice exam 8 [PDF]Solution 8 [PDF]
Practice exam 9 [PDF]Solution 9 [PDF]

Second Midterm

The second exam takes place Tuesday, April 3, 2018 in Hall B from 7 PM to 8:30 PM.

Final Exam

The final exam takes place on Tuesday, 5/8/2018 at 2PM. See the Schedule.
Please send questions and comments to