• #### Solving Linear Systems Using Matrix Algebra - Concept

##### Math›Precalculus›Systems of Linear Equations and Matrices
How to convert a system of linear equations into a matrix equation and solve it.
• #### Solving Linear Systems Using Matrix Algebra - Problem 1

##### Math›Precalculus›Systems of Linear Equations and Matrices
How to solve two linear equations in two unknowns using matrix algebra.
• #### Solving Linear Systems Using Matrix Algebra - Problem 3

##### Math›Precalculus›Systems of Linear Equations and Matrices
How to solve three linear equations in three unknowns using the TI-84 to find the inverse of the coefficient matrix.
• #### Solving Linear Systems Using Matrix Algebra - Problem 2

##### Math›Precalculus›Systems of Linear Equations and Matrices
How to solve three linear equations in three unknowns using matrix algebra.
• #### The Identity Matrix - Concept

##### Math›Precalculus›Systems of Linear Equations and Matrices
How to determine the identity matrix of order n.
• #### The Inverse of a Square Matrix - Problem 3

##### Math›Precalculus›Systems of Linear Equations and Matrices
How to find the inverse of a square matrix of order 3 using row operations.
• #### The Inverse of a Square Matrix - Problem 2

##### Math›Precalculus›Systems of Linear Equations and Matrices
How to determine that a matrix has no inverse using row operations.
• #### The Inverse of a Square Matrix - Problem 1

##### Math›Precalculus›Systems of Linear Equations and Matrices
How to find the inverse of a square matrix of order 2 using row operations.
• #### The Inverse of a Square Matrix - Concept

##### Math›Precalculus›Systems of Linear Equations and Matrices
How to determine whether two matrices are inverses.
• #### Matrix Operations - Problem 3

##### Math›Algebra 2›Matrices
Using matrix operations to solve matrix equations
Tags:
• #### 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 2

##### Math›Algebra›Solving Systems of Equations
How to use matrices to solve a system of equations that has three equations and three variables.
• #### 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.
• #### Cramer's Rule - Concept

##### Math›Precalculus›Systems of Linear Equations and Matrices
How to solve a system of two linear equations with two unknowns using Cramer's rule.
• #### Cramer's Rule - Problem 2

##### Math›Precalculus›Systems of Linear Equations and Matrices
How to solve a system of three linear equations with three unknowns using Cramer's rule and the TI-84 to compute determinants.
• #### 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 1

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