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Mathematics 8 Online
OpenStudy (anonymous):

Find the domain of the following function: f (x) = sqrt x - 6

OpenStudy (shadowfiend):

So the first question to ask is, is there a limit on the domain of sqrt(x) (hint: the square root is, by default, only positive). Once you have that limit, you can shift it negative by 6, because of the -6. Does that make sense?

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