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Math Help - find the domain

  1. #1
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    Exclamation find the domain



    i got [1,2] the answer is (1,2) whats the problem in including 1 & 2?
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  2. #2
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    Your answer is correct from what I can see. The square root of zero is well-defined, so there's no reason not to include 1 and 2.
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