151 Videos for "system"

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. 
Percent Concentrations  Problem 3
Math › Algebra › Word Problems Using Systems of Equations
How to solve word problems about mixing two liquids with different percent concentrations and one of the ingredients is "pure." 
Sum of Digits  Problem 2
Math › Algebra › Word Problems Using Systems of Equations
How to solve a problem when asked to switch the digits of a 2digit number and one digit is zero. 
Percent Concentrations  Problem 1
Math › Algebra › Word Problems Using Systems of Equations
How to solve word problems about mixing two liquids with different percent concentrations and the quantity of one ingredient is unknown. 
Mixture Problems  Problem 2
Math › Algebra › Word Problems Using Systems of Equations
How to solve word problems when mixing two quantities with different prices and the amount of one ingredient is unknown. 
Mixture Problems  Problem 1
Math › Algebra › Word Problems Using Systems of Equations
How to solve word problems when mixing two quantities with different prices and the price of the mix is unknown. 
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. 
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. 
Sum of Digits  Problem 1
Math › Algebra › Word Problems Using Systems of Equations
How to solve a problem when asked to switch the digits of a 2digit number and the result is more than the original. 
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  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 2
Math › Precalculus › Systems of Linear Equations and Matrices
How to determine that a matrix has no inverse using row operations. 
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. 
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 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 1
Math › Precalculus › Systems of Linear Equations and Matrices
How to compute a 3x3 determinant using row operations to simplify it first. 
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. 
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. 
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. 
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.