Determine if Two Functions are Inverses

In this lesson, we will learn how to determine if two functions are inverses of each other using function composition. If two functions f(x) and g(x) are inverses, then it must be true that f(g(x)) = x and g(f(x)) = x. If one of these conditions fails, we can report that they are not inverses. We must check both in order to say that our two functions f and g are inverses.