• #### Square Matrices - Problem 3

##### Math›Precalculus›Systems of Linear Equations and Matrices
How to show that two matrices are inverses (in the sense of matrix multiplication).
• #### Square Matrices - Problem 2

##### Math›Precalculus›Systems of Linear Equations and Matrices
How to interpret 2x2 matrices as transformations.
• #### Square Matrices - Problem 1

##### Math›Precalculus›Systems of Linear Equations and Matrices
How to demonstrate that matrix multiplication is not commutative.
• #### Square Matrices - Concept

##### Math›Precalculus›Systems of Linear Equations and Matrices
How to determine whether two matrices can be multiplied, and if so, what the dimensions of the product will be.

• #### Introduction to Matrices - Problem 1

##### Math›Algebra 2›Matrices
Introduction to matrices, including naming, columns and rows, and how to write a system of equations in matrix form
Tags:
• #### Augmented Matrices - Concept

##### Math›Algebra 2›Matrices
How to use matrices to solve a system of linear equations.
• #### Augmented Matrices - Problem 4

##### Math›Algebra 2›Matrices
Using an augmented matrix to solve a system of equations by hand
Tags:
• #### Augmented Matrices - Problem 5

##### Math›Algebra 2›Matrices
Solving a system of equations using an augmented matrix on a TI graphing calculator
Tags:
• #### Invertible Square Matrices and Determinants - Concept

##### Math›Precalculus›Systems of Linear Equations and Matrices
How to determine whether a square matrix is invertible using its determinant.
• #### Invertible Square Matrices and Determinants - Problem 1

##### Math›Precalculus›Systems of Linear Equations and Matrices
How to show that a 3x3 matrix is not invertible by computing its determinant.
• #### Augmented Matrices - Problem 1

##### Math›Algebra 2›Matrices
How to solve a system of linear equations using an augmented matrix.
• #### Augmented Matrices - Problem 2

##### Math›Algebra 2›Matrices
How to solve a system of linear equations using an augmented matrix that yields no solution.
• #### Augmented Matrices - Problem 3

##### Math›Algebra 2›Matrices
How to solve a system of linear equations using an augmented matrix that yields the same line.
• #### Invertible Square Matrices and Determinants - Problem 2

##### Math›Precalculus›Systems of Linear Equations and Matrices
How to show that a 3x3 matrix, [2 5 3; -15 10 18; 20 50 30], is not invertible by computing its determinant.
• #### Matrix Operations - Problem 2

##### Math›Algebra 2›Matrices
How to multiply matrices by a scalar multiple.
• #### The Inverse of a Square Matrix - Concept

##### Math›Precalculus›Systems of Linear Equations and Matrices
How to determine whether two matrices are inverses.
• #### Solving Systems using Matrices - Concept

##### Math›Algebra›Solving Systems of Equations
How to use matrices to solve a system of equations.
• #### Solving Systems using Matrices - Problem 1

##### Math›Algebra›Solving Systems of Equations
How to use matrices to solve a system of equations with whole number solutions.