matrices square matrices order matrix multiplication identity matrix inverse matrices 175 videos

The Identity Matrix
Precalculus Systems of Linear Equations and Matrices
How to determine the identity matrix of order n.
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The Inverse of a Square Matrix
Precalculus Systems of Linear Equations and Matrices
How to determine whether two matrices are inverses.
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Square Matrices
Precalculus Systems of Linear Equations and Matrices
How to determine whether two matrices can be multiplied, and if so, what the dimensions of the product will be.
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Matrix Operations
Algebra 2 Matrices
How to use simple matrix operations.
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Invertible Square Matrices and Determinants
Precalculus Systems of Linear Equations and Matrices
How to determine whether a square matrix is invertible using its determinant.
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Introduction to Matrices
Algebra 2 Matrices
How to talk about matrices.
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Solving Systems using Matrices
Algebra Solving Systems of Equations
How to use matrices to solve a system of equations.
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Augmented Matrices
Algebra 2 Matrices
How to use matrices to solve a system of linear equations.
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Solving Linear Systems Using Matrix Algebra
Precalculus Systems of Linear Equations and Matrices
How to convert a system of linear equations into a matrix equation and solve it.
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2x2 Determinants
Precalculus Systems of Linear Equations and Matrices
How to compute the determinant of a 2x2 square matrix.
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Additive and Multiplicative Inverses
Algebra PreAlgebra
How to find additive and multiplicative inverses.
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3x3 Determinants
Precalculus Systems of Linear Equations and Matrices
How to compute the determinant of a 3x3 square matrix using minors by expanding along the top row.
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Trigonometric Identities
Precalculus Trigonometric Functions
How to use the unit circle to derive the tangent identity and the Pythagorean identity.
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Trigonometric Identities
Trigonometry Trigonometric Functions
How to use the unit circle to derive the tangent identity and the Pythagorean identity.
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Definition of Inverse
Algebra 2 Inverse, Exponential and Logarithmic Functions
How to define an inverse.
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Completing the Square
Algebra Quadratic Equations and Functions
How to solve a quadratic equation by completing the square.
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Punnett Squares
Biology Mendelian Genetics
How to generate and use the Punnet squares.
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