Sophia Learning
Sophia: Zero Determinant: Lesson 5
This lesson goes over matrices with a determinant of zero. It is 5 of 7 in the series titled "Zero Determinant." [2:47]
Sophia Learning
Sophia: Dot Products
This lesson introduces the concept of a dot product and its relationship to matrix operations.
Sophia Learning
Sophia: Multiplying Two Medium Matrices: Lesson 7
This lesson demonstrates multiplication of 3x3 matrices. It is 7 of 7 in the series titled "Multiplying Two Medium Matrices."
Khan Academy
Khan Academy: Showing Relation Between Basis Cols and Pivot Cols
This video shows that linear independence of pivot columns implies linear independence of the corresponding columns in the original equation.
Sophia Learning
Sophia: Scalar Multiplication
Determine how to do scalar multiplication with matrices. Check understanding with a quiz. [2:21]
Other
Mscrystalvest: Vertex Edge Graphs
A screencast showing how to change vertex edge digraphs into matrices. [6:09]