## anonymous 4 years ago F(x)=sqrt X How do I find domain and range? Please and Thank you.

1. anonymous

$f(x)equals \sqrt{x}$

2. anonymous

For Domain of Square root numbers always remember that the square root values should be greater or equal to zero but it can't be negative.. $x \ge 0$ So Domain is all positive real numbers including 0 also.. But no negative numbers..

3. anonymous

So the range would be [infinity, 0)?

4. anonymous

NO..

5. anonymous

let f(x) = y so, y = $$\sqrt{x}$$ Square both the sides: $$y^2 = x$$ Range is (infinity, -infinity)..

6. anonymous

Sorry: (-infinity, infinity)

7. anonymous

Thank you.

8. anonymous

Welcome dear..