Daniel K. answered • 12/02/21
Tutor
5.0
(547)
Masters in Statistics for APs, AMC training, Calc-based Statistics, R
The domain specifies the acceptable values for x. We have -sqrt(-x) , if I understand correctly, and we need to be taking the sqrt of a positive or zero number. so -x needs to be NOT negative, which means that x needs to be not positive. X can be negative or zero. Check a few to see and you will see that if x<= 0 we always get a legitimate output for this function.
Daniel K.
tutor
do you mean sqrt(-x) ? I will literally copy what I wrote above, because it applies:
We need to be taking the sqrt of a positive or zero number. so -x needs to be NOT negative, which means that x needs to be not positive. X can be negative or zero. Check a few to see and you will see that if x<= 0 we always get a legitimate output for this function.
Report
10/12/22
Kera M.
What happens if the x under the sqrt is the only negative10/11/22