## FUNCTION

### Function

In mathematics, a**function**is a relation between a set of inputs and a set of permissible outputs with the property that each input is related to exactly one output. An example is the function that relates each real number

*x*to its square

*x*

^{2}. The output of a function

*f*corresponding to an input

*x*is denoted by

*f*. In this example, if the input is −3, then the output is 9, and we may write

*f*= 9. The input variable are sometimes referred to as the argument of the function.

*The above text is a snippet from Wikipedia: Function (mathematics)*

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### function

#### Noun

- What something does or is used for.
- A professional or official position.
- An official or social occasion.
- A relation where one thing is dependent on another for its existence, value, or significance.
- A relation in which each element of the domain is associated with exactly one element of the codomain.
- A routine that receives zero or more arguments and may return a result.
- The physiological activity of an organ or body part.
- The characteristic behavior of a chemical compound.
- The role of a social practice in the continued existence of the group.

#### Verb

- to have a function
- to carry on a function; to be in action

*The above text is a snippet from Wiktionary: function*

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and as such is available under the Creative Commons Attribution/Share-Alike License.