Sophia Learning
Sophia: Using Determinants to Classify 2x2 Matrices: Lesson 2
This lesson demonstrates how the determinant of a 2x2 matrix can be used to tell whether or not the matrix represents a dependent linear system, an inconsistent linear system, or neither.
Purple Math
Purplemath: Determinants
A complete lesson on matrix determinants is offered here. From explanation of what a determinant is to how to find the determinant of a 2x2 or 3x3 matrix. Steps are written in and shown for the student or teacher's use. Also provided are...