Inverse Functions

In previous posts, we already have studied various ways to create new functions like addition, multiplications, division, and composition. But with this function transformation, we can just obtain rational functions. Let's introduce new techniques to transform functions. A function f is one-one (one to one) if f(a) f(b) whenever a b. An example of one to one function is the identity function f(x) x since every x will have himself as a solution.