Some error occured while loading page for you. Please try again.
We now understand the definition of functions.
If , where and then is called an image of , and is called the preimage of .
Given and ,
We call the function as (one-to-one) if:
Let us define a particular one-to-one function as , such that
The function defined in the previous challenge is not one-to-one because:
Your task is to complete the function that takes as the input and return .