How do you find the domain and range of piecewise function y={sqrt(-x) for -4<=x<=0 and sqrtx for 0<=x<=4?

1 Answer
Apr 20, 2015

The domain is allready defined by the question -4<=x<=+4

The range is what values the function can go to:
If x=-4->y=sqrt(-(-4))=sqrt4=2
And for positive x's it's the same limit.

Actually the description looks like an absolute function:

y=sqrt(|x|) for the range -4<=x<=+4
graph{sqrt(|x| [-5.546, 5.55, -2.773, 2.774]}