Khan Academy
Khan Academy: Linear Algebra: Inverting Matrices (Part 3)
Video shows how to determine the inverse of a 3 by 3 matrix using the Gauss-Jordan elimination method. This video also appears in the strand Algebra: Matrices. [13:35]
Khan Academy
Khan Academy: Linear Algebra: Example of Finding Matrix Inverse
A video lesson that works through a concrete example to find the inverse of a 3 x 3 matrix. The original matrix is augmented by the identity matrix and then put in reduced row echelon form. The result of the row operations on the...
Khan Academy
Khan Academy: Linear Algebra: Inverting Matrices (Part 2)
Video example of finding the inverse of a 3 by 3 matrix. Includes using expansion by minors to determine the determinant and finding the matrix of cofactors and adjugate or adjoint matrix. This video also appears in the strand Algebra:...
Khan Academy
Khan Academy: Linear Algebra: Singular Matrices
Video explains why a matrix is singular if its determinant is 0. Illustrates that when a matrix equation is built with a singular matrix, then there are no solutions because the system it represents is that of two parallel lines. Shows...
Khan Academy
Khan Academy: Linear Algebra: Formula for 2 X 2 Inverse
A video lesson in which a formula is derived for finding the inverse of a 2 x 2 matrix. Addresses that a 2 x 2 matrix is only invertible if the determinant is not equal to 0. Defines the determinant and shows two examples of calculating...
Khan Academy
Khan Academy: Linear Algebra: Inverse Matrix (Part 1)
Video first explains and gives examples of identity matrices. Then explains what an inverse matrix is and shows how to calculate the inverse of a 2x2 matrix. [14:14]
Khan Academy
Khan Academy: Arithmetic and Pre Algebra: Inverse Property of Multiplication
This video shows the inverse property of multiplication and its relation to division. Practice problems are available. [3:16]
Khan Academy
Khan Academy: Algebra: Inverse Variation Application
Video solving an inverse variation application problem related to stringed instruments by first finding the constant of proportionality and then using it to find another value. [4:42]
PBS
Pbs Learning Media: Math in Fencing: Division of Clock Time
Learn about the mathematics of fencing, including the ratio of touches to time remaining that an athlete needs to mentally calculate in order to stay in the match, in this video from Center for Asian American Media. In the accompanying...
Sophia Learning
Sophia: Finding the Inverse of a Function: Lesson 11
This lesson will describe how to find the inverse of a function by solving for x in terms of y and then switching x and y. It is 11 of 12 in the series titled "Finding the Inverse of a Function."
Sophia Learning
Sophia: Finding the Inverse of a Function: Lesson 6
This lesson will describe how to find the inverse of a function by solving for x in terms of y and then switching x and y. It is 6 of 12 in the series titled "Finding the Inverse of a Function."
Sophia Learning
Sophia: Finding the Inverse of a Function of a Function: Lesson 10
In this lesson, you will learn how to follow the steps to find the function of a function and its inverse. It is 10 of 10 in the series titled "Finding the Inverse of a Function of a Function."
Sophia Learning
Sophia: Finding the Reciprocal: Lesson 8
In this lesson, the student will learn how to find the reciprocal of any given fraction. It is 8 of 11 in the series titled "Finding the Reciprocal."
Sophia Learning
Sophia: Finding the Inverse of a Function: Lesson 9
This lesson will describe how to find the inverse of a function by solving for x in terms of y and then switching x and y. It is 9 of 12 in the series titled "Finding the Inverse of a Function."
Sophia Learning
Sophia: Finding the Inverse of a Function of a Function: Lesson 8
In this lesson, you will learn how to follow the steps to find the function of a function and its inverse. It is 8 of 10 in the series titled "Finding the Inverse of a Function of a Function."
Virtual Nerd
Virtual Nerd: How Do You Solve a Word Problem Using Inverse Variation?
Word problem showing how to use the formula for inverse variation to find the constant of inverse variation and then solve for the answer. [3:08]
Virtual Nerd
Virtual Nerd: What's a Reciprocal?
In this tutorial, learn the basics about reciprocals which are important in dividing fractions, finding perpendicular lines, and dealing with inverse proportions. [5:54]
Virtual Nerd
Virtual Nerd: What Are Inverse Operations?
This video will help you understand that opposite operations will undo each other. Watch examples showing addition is the opposite of subtraction and division is the opposite of multiplication. [3:29]
Virtual Nerd
Virtual Nerd: What Is the Inverse Property of Matrix Addition?
Learn about the Inverse Property of Matrix Addition by watching this tutorial. [5:44]
Khan Academy
Khan Academy: Arithmetic Properties: Inverse Property of Addition
This video demonstrates the simple idea that a number plus its negative is 0.
Khan Academy
Khan Academy: Transpose of a Matrix: Transposes of Sums and Inverses
Transposes of sums and inverses are reviewed with this short video.
Khan Academy
Khan Academy: Finding Inverses of Matrices: Nxn Determinant
Defining the determinant for nxn matrices. An exampled of a 4x4 determinant.
Khan Academy
Khan Academy: Finding Inverses of Matrices: Example of Finding Matrix Inverse
Example of calculating the inverse of a matrix
Khan Academy
Khan Academy: Linear Algebra: Inverting Matrices (Part 2)
Video example of finding the inverse of a 3 by 3 matrix. Includes using expansion of minors to determine the determinant and finding the matrix of cofactors and adjugate or adjoint matrix. This video also appears in the strand Algebra:...