matrices rows columns dimension matrix multiplication 58 videos

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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Introduction to Matrices
Algebra 2 Matrices
How to talk about matrices.
matrix dimensions element row column 
The Identity Matrix
Precalculus Systems of Linear Equations and Matrices
How to determine the identity matrix of order n.
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Matrix Operations
Algebra 2 Matrices
How to use simple matrix operations.
adding matrices scalar multiple matrix matrices 
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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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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Simplifying Determinants
Precalculus Systems of Linear Equations and Matrices
How to simplify determinants using three row (or column) operations.
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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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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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Two Column Proofs
Geometry Triangles
How to organize a two column proof.
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Additive and Multiplicative Inverses
Algebra PreAlgebra
How to find additive and multiplicative inverses.
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Law of Definite Proportions  Law of Multiple Proportions
Physics The Atom and Quantum Physics
Understanding the laws of definite and multiple proportions.
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Law of Definite Proportions  Law of Multiple Proportions
Chemistry Matter
Understanding the laws of definite and multiple proportions.
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Probability of Multiple Events
Precalculus Topics in Discrete Math
How to find the probability of multiple events.
probability mutually exclusive inclusive overlap 
Probability of Multiple Events
Algebra 2 Combinatorics
How to find the probability of multiple events.
probability mutually exclusive inclusive overlap 
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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Vector Operations in 3D
Precalculus Vectors and Parametric Equations
How to perform vector operations like addition, scalar multiplication, the dot product, and finding the magnitude, in three dimensions.
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