[ad#Google Top]

We use the identity matrix to calculate a the inverse of a square matrix. In order to be invertible, a matrix must be square. By finding the square matrix inverse, we can find the solution of a system of linear equations. A square matrix inverse, when multiplied on the left or right by the original matrix gives us the identity matrix.

This video is brought to you by BColumbiaCalculus (YouTube).

### Citation styles

- APA style
- What is the Inverse of a Square Matrix?. (2013, March 2). In
*ClassBrain Math Tutorials*. Retrieved 15:39, September 23, 2018, from http://www.classbrainmath.com/inverse-of-a-square-matrix/ - MLA style
- Cynthia Kirkeby, “What is the Inverse of a Square Matrix?.”
*ClassBrain Math Tutorials*. 2 March 2013, 10:09 UTC. . 23 Sep 2018 <http://www.classbrainmath.com/inverse-of-a-square-matrix/>. - MHRA style
- Cynthia Kirkeby, 'What is the Inverse of a Square Matrix?',
*ClassBrain Math Tutorials*, 2 March 2013, 10:09 UTC, <http://www.classbrainmath.com/inverse-of-a-square-matrix/> [accessed 23 September 2018] - The Chicago Manual of Style
- Cynthia Kirkeby, “What is the Inverse of a Square Matrix?.”
*ClassBrain Math Tutorials*, http://www.classbrainmath.com/inverse-of-a-square-matrix/ [accessed September 23, 2018]. - CBE/CSE style
- Cynthia Kirkeby, What is the Inverse of a Square Matrix? [Internet]. ClassBrain Math Tutorials; 2013 March 2, 10:09 UTC [cited 2018 Sep 23]. Available from: http://www.classbrainmath.com/inverse-of-a-square-matrix/.
- Bluebook style
- What is the Inverse of a Square Matrix?, http://www.classbrainmath.com/inverse-of-a-square-matrix/ (last visited Sep. 23, 2018).
- AMA style
- Cynthia Kirkeby, What is the Inverse of a Square Matrix?. ClassBrain Math Tutorials. March 2, 2013, 10:09 UTC. Available at: http://www.classbrainmath.com/inverse-of-a-square-matrix/. Accessed September 23, 2018.