Functions are defined as the relations which give a particular output for a particular input value. A function has a domain and codomain (range). f (x) usually denotes a function where x is the input of the function . In general, a function is written as y = f (x). A function is a relation between two sets set A and set B. Learn what a function is in Maths with clear definitions, types, visual examples, and tips to identify and use functions in problems. Learn what a function is in math, how to represent it, and how to identify and classify it. A function is a rule that assigns a unique output to each input from a set of values. 3.1 What Are Functions ? Functions are what we use to describe things we want to talk about mathematically. I find, though, that I get a bit tongue tied when I try to define them. The simplest definition is: a function is a bunch of ordered pairs of things (in our case the things will be numbers, but they can be otherwise), with the property that the first members of the pairs are all different from one another. Thus, here is an example of a function : [{1, 1}, {2, 1}, {3, 2}] [{1,1},{2,1},{3 ...
