Question

Which of the following functions has a domain of x ≥ 0?

A.) linear
B.).)squaring
C.) square root
D.) cubing

Answer 1

square root, because you cannot take the square root of a negative number.

Answer 2

The answer is square root but it is in fact possible to take the square root of a negative number - but only when you are operating with Complex numbers. With Real numbers that is indeed not possible.