Question

What is the domain and range of `y=x^3`?

Answer 1

Both the domain and range are all real numbers, or `RR`.

Explanation:

`x^3` is a polynomial, which means its domain is `RR`, and in our case, its range is also `RR` because the only root that `x^3` has, 0, is not a double root (technically it's a triple root, and because 3 is odd, the function switches sign).