Applications of linear algebra, systems of linear equations, gaussian elimination with back substitution, Gauss-Jordan elimination, Cramer’s Rule.
Matrices
Textbook 8 pages
Introduction to linear algebra, applications
Lecture notes
Systems of linear equations, Gaussian elimination with back-substitution, Gauss-Jordan elimination, Cramer’s Rule.
Most high school students in the United States learn about matrices and matrix multiplication, but they often are not taught why matrix multiplication works the way it does.
Online textbook with interactive graphics
Textbook
Matrix addition, multiplication, inverse (Rosen Section 2.6)
Problems
Solutions