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## Function (mathematics) - Wikipedia

en.wikipedia.org/wiki/Function_(mathematics)

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.

## mathematical functions - the wolfram functions site

functions.wolfram.com/

The world's largest collection of formulas and graphics about more than 300000 mathematical functions for the mathematics and science communities.

## What is a Function - Math is Fun

www.mathsisfun.com/sets/function.html

But we are not going to look at specific functions ... ... instead we will look at the general idea of a function. Names. First, it is useful to give a function a name.

## Functions | Algebra I | Khan Academy

Functions are mathematical entities that assign unique outputs to given inputs. Sounds simple? Think again! In this topic you will evaluate, graph, analyze, and ...

## What is a function? | Evaluating functions | Functions | Algebra I ...

Functions assign a single unique output for each of their inputs. In this video, we see examples of various kinds of functions.

## DLMF: NIST Digital Library of Mathematical Functions

dlmf.nist.gov/

Result of a project to provide a modern revision of Abramowitz and Stegun's " Handbook of Mathematical Functions". The site includes definitions, properties, and ...

## Algebra - The Definition of a Function - Pauls Online Math Notes

tutorial.math.lamar.edu/Classes/Alg/FunctionDefn.aspx

This seems like an odd definition but we'll need it for the definition of a function ( which is the main topic of this section). However, before we actually give the ...

## Mathematical function - definition of mathematical function by The ...

www.thefreedictionary.com/mathematical function

Noun, 1. mathematical function - (mathematics) a mathematical relation such that each element of a given set (the domain of the function) is associated with an ...