SOLUTION: What is the domain of the function f(x) = 2x/(x2 - 9)? Give your answer in interval notation, using INF for infinity.

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Question 844674: What is the domain of the function f(x) = 2x/(x2 - 9)? Give your answer in interval notation, using INF for infinity.
Answer by josgarithmetic(39620) About Me  (Show Source):
You can put this solution on YOUR website!
Do you mean, f%28x%29+=+2x%2F%28x%5E2+-+9%29?

The domain has a restriction, that x%5E2-9%3C%3E0 because the denominator must not be zero. Solve this for x, and find x%3C%3E3 and x%3C%3E-3.