Math PreCalc.
posted by Soraya on .
Determine the domain and range of
y= (radical) x4
y= (radical) x^24
plz help me step by step. I just need to refreash my math, but i forgot how to find it

do you mean
y = sqrt(x4) ???
if so the right side is real only for x>/= +4 so domain is all x >/= +4 and range is all positive y
If the second one is
y = sqrt (x^24)
then (x^24) is real only for x>/=2
so domain is all x </ 2 and all x>/=+2
and again y is always + 
how do u figures out the doamin and range???