September 11, 2009
No CommentsHow to Find the Inverse of a Function
Description
A detailed tutorial on how to find the inverse of a function. Step by step tutorial including several examples of inverse functions for reference.
Overview
Most people are familiar with inverse operations – subtraction is the inverse of addition, etc. But what about inverse functions? Inverse functions are functions that are an exact opposite of another function. If you have two functions, set them equal to each other – if they cancel out, then they are inverse functions. What if you are given one function, and told to find the inverse? There is a mathematical trick to finding the inverse of a function. Set f(x) equal to y, and then switch x and y. Then solve for y. Your value for y is your inverse function. This works because f(y) is the inverse function of f(x), and you are simply solving backwards for it.
