151 Videos for "system"

Work Word Problems  Problem 1
Math › Algebra › Word Problems Using Systems of Equations
How to solve word problems when 2 people are doing a work job together and there is a fractional answer. 
Age Word Problems  Problem 1
Math › Algebra › Word Problems Using Systems of Equations
How to solve word problems about the ages of two people if given their future ages. 
Age Word Problems  Problem 2
Math › Algebra › Word Problems Using Systems of Equations
How to solve word problems about the ages of two people if given their past ages. 
Rate Word Problems  Problem 2
Math › Algebra › Word Problems Using Systems of Equations
How to solve word problems involving air or water current. 
Rate Word Problems  Problem 1
Math › Algebra › Word Problems Using Systems of Equations
How to solve word problems about airplanes leaving opposite cities and moving toward each other. 
The Identity Matrix  Concept
Math › Precalculus › Systems of Linear Equations and Matrices
How to determine the identity matrix of order n. 
The Inverse of a Square Matrix  Concept
Math › Precalculus › Systems of Linear Equations and Matrices
How to determine whether two matrices are inverses. 
Area With Determinants  Concept
Math › Precalculus › Systems of Linear Equations and Matrices
How to compute the area of a parallelogram using a determinant. 
Sum of Digits  Concept
Math › Algebra › Word Problems Using Systems of Equations
How to solve a problem when asked to switch the digits of a 2digit number. 
The Cross Product of Vectors  Concept
Math › Precalculus › Systems of Linear Equations and Matrices
How to compute the cross product of two 3D vectors. 
2x2 Determinants  Concept
Math › Precalculus › Systems of Linear Equations and Matrices
How to compute the determinant of a 2x2 square matrix. 
Square Matrices  Problem 1
Math › Precalculus › Systems of Linear Equations and Matrices
How to demonstrate that matrix multiplication is not commutative. 
Percent Concentrations  Concept
Math › Algebra › Word Problems Using Systems of Equations
How to solve word problems about mixing two liquids with different percent concentrations. 
Mixture Problems  Concept
Math › Algebra › Word Problems Using Systems of Equations
How to solve word problems when mixing two quantities with different prices. 
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 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 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. 
Simplifying Determinants  Concept
Math › Precalculus › Systems of Linear Equations and Matrices
How to simplify determinants using three row (or column) operations. 
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).