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Linear Algebra and Differential Equations
MATH 21B

Course Information

Description

Matrices provide the algebraic structure for solving myriad problems across the sciences. We study matrices and related topics such as linear transformations and linear spaces, determinants, eigenvalues, and eigenvectors. Applications include dynamical systems, ordinary and partial differential equations, and an introduction to Fourier series. 

Course Notes

Math 21B is taught in small sections throughout the day on a Monday/Wednesday/Friday schedule (9:00-10:15 am, 10:30-11:45 am, 12-1:15 pm, 1:30-2:45 pm, and 3:00-4:15 pm with sufficient enrollment). Completing your registration for Math 21B is a two-step process: first, you'll enroll in the course within my.harvard, and then, you'll fill out the Math Sectioning form on the Math 21b Canvas page to submit your time preferences. Please submit time preferences before 11:59pm on Friday, 11/14. If your time preferences change, you may submit the form again; only your latest submission will be used. In order to receive your section assignment, you are required to take the Math 21B skills check. Please see the course's Canvas site for more information.

School Faculty of Arts & Sciences
Credits 4
Cross Reg

Available for Harvard Cross Registration

Department Mathematics
Course Component Lecture
Grading Basis FAS Letter Graded
Course Requirements Anti-requisite: Cannot be taken for credit if MATH 22A or AM 22A already complete.
Exam/Final Deadline May 14, 2026
General Education N/A
Quantitative Reasoning with Data Yes
Divisional Distribution Science & Engineering & Applied Science
Course Level Primarily for Undergraduate Students