# Range of Function

• Dec 22nd 2012, 05:24 AM
rcs
Range of Function
how is it possible to find the range of a function)

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
• Dec 22nd 2012, 06:06 AM
Plato
Re: Range of Function
Quote:

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.