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Math Help - Find the domain of this function?

  1. #16
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    Wink Re: Find the domain of this function?

    Quote Originally Posted by explodingtoenails View Post
    So when would abs bars actually affect the value of a binomial?
    using the definition of absolute value (which I recommend you take another look at in your textbook or other resource)

    |x^2 - 4| = x^2 - 4 if ( x^2-4) \ge 0

    |x^2 - 4| = -(x^2 - 4) = 4-x^2 if (x^2-4) < 0

    now, which case should be used if |x^2-4| = 0 ?
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  2. #17
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    Re: Find the domain of this function?

    Quote Originally Posted by skeeter View Post
    using the definition of absolute value (which I recommend you take another look at in your textbook or other resource)

    |x^2 - 4| = x^2 - 4 if ( x^2-4) \ge 0

    |x^2 - 4| = -(x^2 - 4) = 4-x^2 if (x^2-4) < 0

    now, which case should be used if |x^2-4| = 0 ?
    The first case?
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