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Stefan Warner and Steven R. Costenoble
Finite Mathematics & Applied Calculus: Matrix Inversion
Students learn how to find the inverse of a matrix. The tutorial consists of class notes, examples, and practice problems. Review exercises and a chapter quiz are included.
Purple Math
Purplemath: Matrix Inversion: Finding the Inverse of a Matrix
Inverse matrices are very useful for solving matrix equations. But, given a matrix, how do you invert it? How do you find the inverse? The technique for inverting matrices is kind of clever. For a given matrix A and its inverse A-1, we...
Khan Academy
Khan Academy: Determine Inverse Matrices
Given a pair of matrices, determine whether they are inverses of each other. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video, or receive hints.
Khan Academy
Khan Academy: Determine Invertible Matrices
Given a 2x2 matrix, determine whether it has an inverse. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video, or receive hints.
CK-12 Foundation
Ck 12: Algebra: Inverse Matrices
[Free Registration/Login may be required to access all resource tools.] This lesson covers finding the inverse of a 2 x 2 matrix. Students can look at guided notes and then attempt practice problems.
Khan Academy
Khan Academy: Find the Inverse of a 2x2 Matrix
Find the inverse matrix of a given 2x2 matrix. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video, or receive hints.
Stefan Warner and Steven R. Costenoble
Finite Mathematics & Applied Calculus: Topic Summaries: Matrix Algebra
The topic summary outlines matrix algebra. Some topics reviewed are operations with matrices, matrix inverse, and algebra of matrices. The resource consists of definitions, notes, and examples.
J Coffman
Joseph Coffman's Lecture Notes: 2 X 2 Matrices, Determinants, Inverses
Learners investigate matrices, determinants, and inverses. Topics include the identity matrix and inverse of a matrix. The resource consists of examples with detailed solutions and a quiz.
Varsity Tutors
Varsity Tutors: Hotmath: Practice Problems: Identity and Inverse Matrices
Sixteen problems present a variety of practice working with identity and inverse matrices. They are given with each step to the solution cleverly revealed one at a time. You can work each step of the problem then click the "View...
Wolfram Research
Wolfram Math World: Multiplicative Inverse
This site explains multiplicative inverse in nonzero real and complex numbers, as well as matrices. Also discusses how to detect the multiplicative inverse of complex numbers in a table.
Texas Instruments
Texas Instruments: Determinants and Inverse Matrices
In these questions, students are asked to find the determinant and the inverse of four 2 x 2 matrices. These multiple choice questions have solutions provided.
CK-12 Foundation
Ck 12: Inverse Matrices
[Free Registration/Login may be required to access all resource tools.] A collection of resources that teaches students that the zero and identity matrices play a role in matrix addition and multiplication similar to the role of 0 and 1...
CK-12 Foundation
Ck 12: Algebra: Adding and Subtracting Matrices
[Free Registration/Login may be required to access all resource tools.] This lesson covers adding and subtracting matrices with the same dimensions. Students can watch a video tutorial, explore guided notes and then attempt practice...
CK-12 Foundation
Ck 12: Algebra: Solving Linear Systems Using Matrices and Technology
[Free Registration/Login may be required to access all resource tools.] This lesson covers using a graphing calculator and matrices to solve a system of equations.
Other
Morgan State: Linear Algebraic Equations and Matrices
This site gives information on linear equations and matrices. Among the topics discussed are the substitution method, Gauss-Jordan Elimination Method, matrix operations, matrix multiplication, and inverse matrices.
McGraw Hill
Glencoe: Quiz on Determinants and Multiplicative Inverses of Matrices
Learners demonstrate comprehension of advanced mathematical concepts in Algebra II. The questions check understanding on matrices. Topics include determinants and multiplicative inverses.
CK-12 Foundation
Ck 12: Algebra: Writing and Solving a Matrix Equation
[Free Registration/Login may be required to access all resource tools.] This lesson covers using a matrix equation to solve a system of linear equations.
Texas Instruments
Texas Instruments: Matrices and Linear Equations
This Computer Algebra System (CAS) activity encourages students to investigate addition, subtraction, and multiplication of matrices. They find the inverse of a matrix. Students also solve a set of linear equations by using matrices.
Analyze Math
Analyze Math: The Inverse of a Square Matrix
Learners explore the discrete mathematics topic of matrices. The tutorial demonstrates how to calculate the inverse of a square matrix. The activity includes examples with 2 by 2 and 3 by 3 matrices.
Cool Math
Coolmath: Inverse Matrices
You can add and subtract matrices, multiply a matrix by a scalar, and multiply two matrices. So, what about division? Well, there isn't a division process for matrices. See this example for how to get around this problem!
Khan Academy
Khan Academy: Represent Linear Systems With Matrix Equations
Represent systems of two linear equations with matrix equations by determining A and b in the matrix equation A*x=b. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video, or receive hints.
Texas Instruments
Texas Instruments: Numb3 Rs: Coded Messages
Based off of the hit television show NUMB3RS, this lesson uses matrices (inverse and multiplication) to decode messages hidden within digital pictures -- a process known as steganography. This method of hidden communication is known to...
Interactive Mathematics
Interactive Mathematics: Finding the Inverse of a Matrix
Two methods are demonstrated for finding the inverse of a matrix. The examples are detailed and easy to follow. Several interactive examples are also provided.
Varsity Tutors
Varsity Tutors: Hotmath: Inverse of a Matrix
Find a concise explanation of the inverse of a matrix. An example is given and clearly explained.