Question #891

All functions are invertible.

An inverse function (or anti-function) is a function that "reverses" another function: if the function f applied to an input x gives a result of y, then applying its inverse function g to y gives the result x, and vice versa. Not all functions are invertible! Look at the example below, my_function() definitely cannot be inverted.

import random

def my_function():
    return random.randint(100)


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