## anonymous 5 years ago Find the Domain of g(x) = √15-4 my answer = {x = all real numbers} right? because im not asked for the restriction...?

1. M

that's just a constant

2. anonymous

then? what else would i need to add? the restriction too?

3. M

g(x) = √15-4 is just a constant. there's no domain to input

4. M

is that what they gave you?

5. anonymous

it says find the domain, and then √15-4X ahh sorry i 4got the X

6. M

anything under radical cannot be a negative number

7. M

domain is X > 15/4

8. M

15/4 < X < infinity

9. M

(15/4, infinity)

10. anonymous

{X = all real numbers, 15/4 < X < infinity}

11. M

whoops i mean [15/4, infinity) since you can have 0 under radical

12. M

$15/4 \le X < \infty$

13. anonymous

i would just put that into brackets then right? like {X = all real numbers, 15/4 < X < ∞}

14. M

yeah but it's 15/4 ≤ X < ∞

15. M

greater than or equal to 15/4

16. anonymous

kk thanks