# Functions

- Created by: Catchupman
- Created on: 08-09-17 16:23

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**Functions:**

A function from a set A to a set B is a rule by which each member of set A is linked to **exactly one member** of the set B.

In this case:

- Set A is called the
**Domain**of the function - Set B is called the
**Co-Domain**of the function. - If
*a*is a member of**A**and f(a) = b then*b*is called the**Image**of…

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