Question

Which of the following functions is the inverse also the function?

I) f(x)= X^3
II) f(x)= X^4
III) f(x)= - |X|

They're can be multiple answers because my choices are
a. I and II only c. I, II, and III
b. I only d. III only

Answer 1

also "a" function .. or also "the same" function?

Answer 2

Also a function, lol sorry

Answer 3

odd degrees are functionable; even degrees need a restricted domain