Learn how to show that two functions are inverses. The composition of two functions is using one function as the argument (input) of another function. In simple terms composition of two functions is putting one function inside another function. Thecomposition of two functions that are inverse to each other yeilds x.
To show whether two functions are inverse of each other, we composite the two functions. If the result is x, then the two functions are inverse of each other and they are not inverses otherwise.