(Ex 3.2.104) Find the Inverses of a 2 by 2 Matrix and 3 by 3 Matrix with Variable Entries

This video explains how to find the inverse of a 2 by 2 matrix using a formula and how to find the inverse of 3 by 3 matrix using an augmented matrix.  Both matrices have variable entries or elements.

(Ex 3.2.7) Determine an Unknown Entry that Makes a 3 by 3 Matrix Not Invertible

This video explains how to find an unknown entry or element in a 3 by 3 matrix that makes the matrix not invertible. 

(Ex 3.2.6) Determine an Unknown Entry that Makes a 3 by 3 Matrix Not Invertible

This video explains how to find an unknown entry or element in a 3 by 3 matrix that makes the matrix not invertible. 

(3.2.4B) Solving a System of Linear Equations Using a Matrix Equation

This lesson explains how to solve a system of equations using a matrix equation.

(3.2.4A) Solving a System of Linear Equations Using an Augmented Matrix

This lesson explains how to solve a system of equations using an augmented matrix.

Determine the Equation of a Tangent Line and Normal Line to a Function

This video explains how to determine the equation of the tangent line and equation of the normal line to a given function at a given point.

Determine the Fundamental Subspaces of a Matrix Given the Singular Value Decomposition(2 by 3)

This is video explains how to determine the 4 fundamental subspaces of a matrix given the singular value decomposition of the matrix.

Determine the Fundamental Subspaces of a Matrix (2 by 3)

This is video explains how to determine the 4 fundamental subspaces of a matrix.  

Determine the Singular Value Decomposition of a Matrix

This video explains how to determine the singular value decomposition of a matrix.

Determine the Singular Values of a Matrix

This video explains how to determine the singular values of a matrix.