• Length:
8 Weeks
• Effort:
5–8 hours per week
• Price:

FREE
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• Institution
• Subject:
• Level:
Intermediate
• Language:
English
• Video Transcript:
English

## Prerequisites

18.031x Introduction to Differential Equations (Scalar equations), 18.032x Differential Equations: 2x2 Systems (2x2 first order differential equations)

Differential equations are the mathematical language we use to describe the world around us. Most phenomena can be modeled not by single differential equations, but by systems of interacting differential equations.  These systems may consist of many equations. In this course, we will learn how to use linear algebra to solve systems of more than 2 differential equations. We will also learn to use MATLAB to assist us.

We will use systems of equations and matrices to explore:
• The original page ranking systems used by Google,
• Balancing chemical reaction equations,
• Tuned mass dampers and other coupled oscillators,
• Three or more species competing for resources in an ecosystem,
• The trajectory of a rider on a zipline.
The five modules in this series are being offered as an XSeries on edX. Please visit the Differential Equations XSeries Program Page to learn more and to enroll in the modules.

*Zipline photo by teanitiki on Flickr (CC BY-SA 2.0)

### What you'll learn

After this course, you will be able to
• Model and solve different real world phenomena with systems of differential equations.
• Find the dimension and a basis for a (finite dimensional) vector space.
• Formulate and solve eigenvalue and eigenvector problems.
• Use MATLAB to explore solutions to large systems of equations.
Unit 1: Linear Algebra
1. Solving linear systems: elimination and RREF
2. Nullspace, vector space
3. Column space, determinants, and inverses
4. eigenvalues, eigenvectors, and diagonalization
Unit 2: Systems of Differential Equations
1. Solving homogeneous NxN systems of differential equations
2. Matrix exponential and diagonalization
3. Decoupling and solving inhomogeneous systems of equations
4. Solving nonlinear systems with MATLAB

## Meet your instructors

David Jerison
Professor of Mathematics
Massachusetts Institute of Technology
Bjorn Poonen
Claude Shannon Professor of Mathematics
Massachusetts Institute of Technology
Jennifer French
Lecturer & Digital Learning Scientist
Massachusetts Institute of Technology
Kristin Kurianski
Postdoctoral Associate
Massachusetts Institute of Technology

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## Frequently asked questions

What are the prerequisites for this course?

We assume familiarity with both 18.031x Introduction to Differential Equations and 18.032x Differential Equations: 2x2 systems. Knowledge from 18.03Lx is not required to succeed in this course.

### Who can take this course?

Unfortunately, learners from one or more of the following countries or regions will not be able to register for this course: Iran, Cuba and the Crimea region of Ukraine. While edX has sought licenses from the U.S. Office of Foreign Assets Control (OFAC) to offer our courses to learners in these countries and regions, the licenses we have received are not broad enough to allow us to offer this course in all locations. EdX truly regrets that U.S. sanctions prevent us from offering all of our courses to everyone, no matter where they live.