Classbrainmath - classbrainmath.com - ClassBrain Math Tutorials
General Information:
Latest News:
How Do You Solve Linear Systems Using Matrix Algebra? 19 Mar 2010 | 01:58 am
One of the most common applications of square matrices is to solve systems of linear equations. Solving linear systems using matrix algebra is more efficient than hand calculating the systems using su...
How Do You Simplify Radical Expressions? 18 Mar 2010 | 06:54 pm
When simplifying square roots, we give the positive and negative answer if solving an equation that did not originally have a square root. Otherwise, we give only the principal root. Square roots of n...
How Do You Solve Equations with Variables on Both Sides? 18 Mar 2010 | 06:21 pm
It takes practice and a few useful methods to decide where to start when solving equations with a variable on both sides of the equals sign. There are many methods we use to solve for the variable whe...
How Do You Factor Trinomials, where A=1? 18 Mar 2010 | 06:17 pm
When you are given a trinomial, or a quadratic equation, it can be useful to factor the equation for the purposes of canceling and simplifying. Factoring trinomials is easiest when the leading coeffic...
How Do You Simplify Complex Fractions? 18 Mar 2010 | 04:58 pm
When you simplifying complex fractions, factor the numerator and denominator into terms multiplying each other and look for equivalents of one (something divided by itself). Include parenthesis around...
What Is An Augmented Matrix? 18 Mar 2010 | 04:21 pm
To solve a system of linear equations, we can use substitution, elimination or something we call augmented matrices. To use matrices to solve a system of linear equations, we first enter the values as...
How Do You Complete the Square? 18 Mar 2010 | 04:01 pm
Solving quadratics can be difficult. Completing the square is one method for solving a quadratic equation. A quadratic equation can also be solved by factoring, using the square roots, or using the qu...
What is the Inverse of a Square Matrix? 18 Mar 2010 | 03:47 pm
We use the identity matrix to calculate a the inverse of a square matrix. In order to be invertible, a matrix must be square. By finding the square matrix inverse, we can find the solution of a system...
What Are Variables? 18 Mar 2010 | 02:29 pm
Variables are used throughout Algebra, Geometry, and Calculus. They are the basic building blocks. Variables are therefore very important to understand. A variable is a symbol, such as x, that is use...
How Do You Graph Lines Using a Table of Values? 18 Mar 2010 | 02:15 pm
Graphing Lines Using a Table of Values We often use a table of values to plot and connect points when we are graphing a line. Sometimes graphing lines using an equation involves the same methods as u...
