## Understanding the Concept of Inverse Functions

Let us consider the functions

and .

The table on the left shows the ordered pairs . We used and substitute them to in the second table.

As we can see, all the values of are the same as those of in the first table. For example, if we have in the first table, applying , we get 27 as output. On the other hand, if we apply to 27, the value returns to . » Read more