They are useful for finding. In algebra a variable is an alphabet which is used to represent the unknown number.
In x 2 6 x is the.
What is a variable in math definition. Variable definition in maths. Making algebraic computations with variables as if they were explicit numbers allows one to solve a range of problems in a single computation. M for the amount of mass used and 3.
In addition to numbers variables are commonly used to represent vectors matrices and functions. In mathematics a variable is a quantity that can change. Splashlearn is an award winning math learning program used by more than 30 million kids for fun math practice.
Variables stand for things that you want to find but don t have the answer to yet. E for the amount of energy produced 2. A typical example is the quadratic formula which allows one to solve every quadratic e.
In other words a variable is a symbol for a number where the value is not known. Einstein s famous equation e mc 2 uses the following variables. In mathematics a variable is a symbol which functions as a placeholder for varying expression or quantities and is often used to represent an arbitrary element of a set.
Letters are used to represent these changing unknown quantities. C 2 to represent the speed of light squared. It represents the value.
Also learn the facts to easily understand math glossary with fun math worksheet online at splashlearn. Really variables are used wherever a best answer needs to be found. The generic letters which are used in many algebraic expressions and equations are x y z.
A variable is a quantity that may be changed according to the mathematical problem. Definition of variable explained with real life illustrated examples. A symbol for a value we dont know yet.
It is usually a letter like x or y. Illustrated definition of variable.