Curated OER
How Do You Solve a Decimal Inequality Using Division?
Divide decimals to solve this inequality! Learners can watch the instructor in this thorough video as she works through an inequality that contains decimals. This resource is appropriate for teaching, reinforcing, or reviewing the concept.
Curated OER
How Do You Find the Cube Root of a Perfect Cube?
Introduce your class to cube roots! You can show them this video, in which an instructor demonstrates how to find the cube root of a perfect cube. While this video is clear and well-made, it is appropriate only for more advanced learners...
Curated OER
What Do You Do With a Negative Exponent?
Just watch this video for a very thorough explanation, step-by-step, on how to work with negative exponents. The instructor explains how it is possible that negative exponents and inverses and fractions are connected in this situation....
Curated OER
What are Inverse Operations?
Explore inverse operations. Video viewers watch as a teacher shows how to "undo" an operation by using the opposite operation. By the end, learners should grasp that addition is the opposite of subtraction and division is the opposite of...
Khan Academy
Khan Academy: Linear Algebra: Deriving a Method for Determining Inverses
An instructional video that explains how the method for finding the inverse transformation matrix is derived. It is the same method for finding the inverse for any invertible matrix. [18:00]
Khan Academy
Khan Academy: Linear Algebra: Showing That a Transpose X a Is Invertible
A video lesson proving that the product of a matrix and its transpose is invertible if all of the columns of the originial matrix are linearly independent. [12:34]
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]
Study Pug
Study Pug: Converting From Exponential Form to Logarithmic Form
Watch this video lesson to learn how to convert from exponential form to logarithmic form. Practice problems included.
Sophia Learning
Sophia: Verifying That Matrices Are Inverses: Lesson 3
This lesson demonstrates how to determine whether or not matrices are inverse. It is 3 of 7 in the series titled "Verifying that Matrices are Inverses."
Sophia Learning
Sophia: Verifying That Matrices Are Inverses: Lesson 7
This lesson demonstrates how to determine whether or not matrices are inverse. It is 7 of 7 in the series titled "Verifying that Matrices are Inverses."
Sophia Learning
Sophia: Verifying That Matrices Are Inverses: Lesson 1
This lesson demonstrates how to determine whether or not matrices are inverse. It is 1 of 7 in the series titled "Verifying that Matrices are Inverses."