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Question 441307: Find the domain of the function g defined by g(x)= square root of (3x+12)
Answer by nerdybill(7384)   (Show Source):
You can put this solution on YOUR website! Domain defines all possible values x can take.
In your case, you just don't want the expression inside the radical to be negative, that is:
3x+12 >= 0
3x >= -12
x >= -4
.
OR, domain is
[-4, +oo)
where oo represents infinity
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