what is a function Understanding the basic concept of functions is essential to our daily lives. Whether it is calculating distance, measuring an object, or predicting the stock market, we use functions in multiple ways. So, what is a function ? A function is simply defined as a set of rules that associates input values with output values. In other words, a function is a relationship between two sets that assigns a unique output value to each input value. Read on to explore the main types of ... A simple example of a function in math is f (x) = 2x, which is defined on R → R; here, any variable in the domain is related to only one variable in the range. Examples of Functions A function in mathematics f is defined as y = f (x), where x is the input value, and for each input value of x, we get a unique value of y. 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 ...
