92 Videos for "systems of linear equations"

Simplifying Determinants  Problem 3
Math › Precalculus › Systems of Linear Equations and Matrices
How to compute a 4x4 determinant using row operations to simplify it first. 
Simplifying Determinants  Problem 2
Math › Precalculus › Systems of Linear Equations and Matrices
How to compute a 3x3 determinant using row operations to simplify it first. 
3x3 Determinants  Problem 2
Math › Precalculus › Systems of Linear Equations and Matrices
How to determine the effect of interchanging two rows on the value of a determinant. 
3x3 Determinants  Concept
Math › 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. 
Invertible Square Matrices and Determinants  Problem 2
Math › Precalculus › Systems of Linear Equations and Matrices
How to show that a 3x3 matrix is not invertible by computing its determinant. 
The Cross Product of Vectors  Problem 2
Math › Precalculus › Systems of Linear Equations and Matrices
How to show that the cross product of vectors u and v is perpendicular to both u and v. 
The Inverse of a Square Matrix  Problem 2
Math › Precalculus › Systems of Linear Equations and Matrices
How to determine that a matrix has no inverse using row operations. 
The Cross Product of Vectors  Problem 1
Math › Precalculus › Systems of Linear Equations and Matrices
How to show that when you reverse the order of a cross product, you get the opposite result. 
Area With the Cross Product  Concept
Math › Precalculus › Systems of Linear Equations and Matrices
How to show that the magnitude of the cross product of two vectors gives the area of the parallelogram determined by those two vectors. 
3x3 Determinants  Problem 1
Math › Precalculus › Systems of Linear Equations and Matrices
How to compute the determinant of a 3x3 square matrix using minors by expanding along any row or column. 
The Inverse of a Square Matrix  Problem 1
Math › Precalculus › Systems of Linear Equations and Matrices
How to find the inverse of a square matrix of order 2 using row operations. 
Invertible Square Matrices and Determinants  Concept
Math › Precalculus › Systems of Linear Equations and Matrices
How to determine whether a square matrix is invertible using its determinant. 
Area With the Cross Product  Problem 3
Math › Precalculus › Systems of Linear Equations and Matrices
How to compute the area of a triangle in xyzspace using vectors formed from two of its sides. 
Area With the Cross Product  Problem 2
Math › Precalculus › Systems of Linear Equations and Matrices
How to compute the area of a triangle in the xyplane using vectors formed from two of its sides. 
Invertible Square Matrices and Determinants  Problem 1
Math › Precalculus › Systems of Linear Equations and Matrices
How to show that a 3x3 matrix is not invertible by computing its determinant. 
Rectangular Coordinate System  Concept
Math › Algebra 2 › Graphs of Linear Equations
How to talk about the rectangular coordinate system. 
Rectangular Coordinate System  Problem 1
Math › Algebra 2 › Graphs of Linear Equations
How to find a point on a line. 
Rectangular Coordinate System  Problem 2
Math › Algebra 2 › Graphs of Linear Equations
How to find x and y intercepts. 
Rectangular Coordinate System  Problem 3
Math › Algebra 2 › Graphs of Linear Equations
How to solve for a variable given a point that lies on the line. 
Systems of Inequalities  Problem 8
Math › Algebra › Solving Systems of Equations
Graphing a system of linear inequalities