SOLUTION: Please help me with domain and range of f(x)=x√x-4 my domain is [4,sideways 8) do not understand range. Please help. Thank you in advance.

Algebra ->  Equations -> SOLUTION: Please help me with domain and range of f(x)=x√x-4 my domain is [4,sideways 8) do not understand range. Please help. Thank you in advance.       Log On


   

Question 721365: Please help me with domain and range of
f(x)=x√x-4
my domain is [4,sideways 8)
do not understand range.
Please help. Thank you in advance.
Answer by fcabanski(1391) About Me  (Show Source):
You can put this solution on YOUR website!
Domain is correct. The domain is all x that keeps a non negative number under the square root. That's [4, inf).


The range is all possible values for f(x).


When x = 4, f(x) = 0. As x gets larger, f(x) gets larger and approaches infinity. Graph it to see that the range goes up forever...infinity. Range = [0, inf)

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