# How do you find the domain and range of #f(x,y) = sqrt(9-x^2-y^2)#?

##### 1 Answer

Apr 7, 2017

#### Answer:

D:

R:

#### Explanation:

For the function:

What is the list of allowable **domain**?

We can't have a value under the square root sign that is less than 0, and so we can see that with

What then is the resulting values of **range**?

With

With

With

And so the range is