# Thread: Range of Function

1. ## Range of Function

how is it possible to find the range of a function)
in interval notation answer,

f(x) = sq.rt ( 9 - x^2)

i really have difficulty in finding range and domain of a function... can you help me in this problem

2. ## Re: Range of Function

Originally Posted by rcs
how is it possible to find the range of a function)
in interval notation answer, f(x) = sq.rt ( 9 - x^2)
i really have difficulty in finding range and domain of a function.

If we have $\sqrt{y}$ then $y\ge 0$.

So $|x|\le 3$. WHY?

Now you show us some of your efforts.