Minors and Cofactors of a Matrix | Linear Algebra

Support the production of this course by joining Wrath of Math to access all my Linear Algebra videos plus lecture notes at the premium tier!
   / @wrathofmath  
🛍 Check out my math fashion brand! https://mathshion.com/

Linear Algebra course:    • Linear Algebra  
Linear Algebra exercises:    • Linear Algebra Exercises  

Get the textbook! https://amzn.to/45KYgmA
Business Inquiries: [email protected]

We go over how to find the minors of a matrix and how to find the cofactors of a matrix. The minor of an entry aij is the determinant of the submatrix when row i and column j are deleted. The cofactor of an entry aij is the minor Mij multiplied by (-1)^(i+j). We go over several examples of finding minors and cofactors of 2x2 matrices, we also find the minors and cofactors of a 3x3 matrix using the cofactor expansion of the determinant. #linearalgebra

Cofactor Expansion Definition of the Determinant:    • The Cofactor Definition of Determinants (L...  

★DONATE★
◆ Support Wrath of Math on Patreon for early access to new videos and other exclusive benefits:   / wrathofmathlessons  
◆ Donate on PayPal: https://www.paypal.me/wrathofmath

Follow Wrath of Math on...
● Instagram:   / wrathofmathedu  
● Twitter:   / wrathofmathedu