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Math Help - Discerning the domain of a function

  1. #1
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    Discerning the domain of a function

    The problem I have is f(x) = (1 - x^2)^1/4, and am not entirely sure on how to approach this problem--so help would be much appreciated, thank you.
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  2. #2
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    Re: Discerning the domain of a function

    When determining the domain of elementary functions, there are three situations which you must avoid:

    1. Taking the logarithm of a non-positive number.
    2. Taking the square root (or even root) of a negative number.
    3. Dividing by zero.

    Which of these three might bear on your problem?
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  3. #3
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    Re: Discerning the domain of a function

    I presume the problem arises in there being an even root, is this correct?
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  4. #4
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    Re: Discerning the domain of a function

    Yep, find where 1 - x^2\geq 0
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