What is the domain and range of $y=( sqrt x)$ ?

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Answer 1 · 2016-06-20T14:09:15

domain: $x in RR$ ,but $x>=0$
range: $(0,oo)$

@@
x need to put real number
therefore,
domain $x in RR ,x>=0$
range $sqrtx$ shouldn't be negative so $(0,oo)$

What is the domain and range of y=( sqrt x)y=( sqrt x)?