7 Videos for "the identity matrix"

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. 
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. 
The Inverse of a Square Matrix  Concept
Math › Precalculus › Systems of Linear Equations and Matrices
How to determine whether two matrices are inverses. 
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).