# Thread: Finding the Domain and Range for. . .

1. ## Finding the Domain and Range for. . .

$g(x) = \sqrt{1 - x^2}$

I know you set it into a rational equality

so. . .

$1 - x^2 > 0$

And now what?

2. Originally Posted by Macleef
$1 - x^2 > 0$
And now what?
$1 > x^2$?

3. Following Plato's Hint we have $|x|\le1\implies -1\le x\le1.$ (It's actually greater or equal than zero, the condition of course.)