92 Videos for "systems of linear equations"

The Cross Product of Vectors  Problem 3
Math › Precalculus › Systems of Linear Equations and Matrices
How to find the equation of a plane that contains three given points. 
Applied Linear Equations: Mixture Problem  Problem 2
Math › Precalculus › Linear Equations and Inequalities
Solving chemistry or percent concentration word problems using a system of linear equations. 
Applied Linear Equations: Mixture Problem  Problem 2
Math › Algebra 2 › Linear Equations
Solving chemistry or percent concentration word problems using a system of linear equations. 
The Identity Matrix  Concept
Math › Precalculus › Systems of Linear Equations and Matrices
How to determine the identity matrix of order n. 
Area With Determinants  Concept
Math › Precalculus › Systems of Linear Equations and Matrices
How to compute the area of a parallelogram using a determinant. 
Square Matrices  Problem 1
Math › Precalculus › Systems of Linear Equations and Matrices
How to demonstrate that matrix multiplication is not commutative. 
The Inverse of a Square Matrix  Concept
Math › Precalculus › Systems of Linear Equations and Matrices
How to determine whether two matrices are inverses. 
2x2 Determinants  Concept
Math › Precalculus › Systems of Linear Equations and Matrices
How to compute the determinant of a 2x2 square matrix. 
The Cross Product of Vectors  Concept
Math › Precalculus › Systems of Linear Equations and Matrices
How to compute the cross product of two 3D vectors. 
Simplifying Determinants  Concept
Math › Precalculus › Systems of Linear Equations and Matrices
How to simplify determinants using three row (or column) operations. 
Area With Determinants  Problem 1
Math › Precalculus › Systems of Linear Equations and Matrices
How to compute the area of a triangle using a determinant. 
Area With Determinants  Problem 2
Math › Precalculus › Systems of Linear Equations and Matrices
How to use the triangle area formula to test three points for collinearity. 
Square Matrices  Problem 3
Math › Precalculus › Systems of Linear Equations and Matrices
How to show that two matrices are inverses (in the sense of matrix multiplication). 
Area With Determinants  Problem 3
Math › Precalculus › Systems of Linear Equations and Matrices
How to compute the area of an irregular quadrilateral using determinants. 
Square Matrices  Problem 2
Math › Precalculus › Systems of Linear Equations and Matrices
How to interpret 2x2 matrices as transformations. 
Square Matrices  Concept
Math › 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. 
Area With the Cross Product  Problem 1
Math › Precalculus › Systems of Linear Equations and Matrices
How to compute the area of a parallelogram using the cross product of the vectors that determine it. 
The Inverse of a Square Matrix  Problem 3
Math › Precalculus › Systems of Linear Equations and Matrices
How to find the inverse of a square matrix of order 3 using row operations. 
3x3 Determinants  Problem 3
Math › Precalculus › Systems of Linear Equations and Matrices
How to determine the effect of a row's common factor on the value of a determinant. 
Simplifying Determinants  Problem 1
Math › Precalculus › Systems of Linear Equations and Matrices
How to compute a 3x3 determinant using row operations to simplify it first.