Given:

Need to find: Where the functions are defined.

The condition for the function to be defined,

⇒

So, the domain of the function is the set of all the real numbers greater than equals to .

The domain of the function, D_f(x) = [, ∞).

Putting in the function we get, f(x) = 0

It means the range of the function is defined for all the values greater than equals to 0.

The range of the function, R_f(x) = [0, ∞).