This precalculus video tutorial explains how to find the inverse of a 3x3 matrix. You need to write an augmented matrix containing the original matrix and the multiplicative identity matrix. You need to convert the original matrix into the multiplicative identity matrix using elementary row operations. The multiplicative identity matrix will change into the inverse of the original matrix as long as you apply the same elementary row operations to it.
Matrices - Free Formula Sheet:
[ Ссылка ]
Full-Length Math & Science Videos:
[ Ссылка ]
___________________________________
Introduction to Matrices:
[ Ссылка ]
Adding and Subtracting Matrices:
[ Ссылка ]
Scalar Multiplication of Matrices:
[ Ссылка ]
Solving Matrix Equations:
[ Ссылка ]
Multiplying Matrices:
[ Ссылка ]
__________________________________
Gaussian Elimination & Row Echelon Form:
[ Ссылка ]
Gauss Jordan Elimination:
[ Ссылка ]
Gaussian Elimination With 4 Variables:
[ Ссылка ]
Inverse of a 2x2 Matrix:
[ Ссылка ]
Inverse of a 3x3 Matrix:
[ Ссылка ]
__________________________________
Determinant of 2x2 and 3x3 Matrix:
[ Ссылка ]
Determinant of 4x4 Matrix:
[ Ссылка ]
Cramer's Rule - 2x2 Linear System:
[ Ссылка ]
Cramer's Rule - 3x3 Linear System:
[ Ссылка ]
___________________________________
Final Exams and Video Playlists:
[ Ссылка ]
