## kitsune0724 F(x)=sqrt X How do I find domain and range? Please and Thank you. one year ago one year ago

1. kitsune0724

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

2. waterineyes

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. kitsune0724

So the range would be [infinity, 0)?

4. waterineyes

NO..

5. waterineyes

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

6. waterineyes

Sorry: (-infinity, infinity)

7. kitsune0724

Thank you.

8. waterineyes

Welcome dear..