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Math Help - Domain Rule

  1. #1
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    Domain Rule

    If I am trying to calcuate the domain. There is an absolute value, so would I set the part inside the absolute value brackets to: greater than or equal to zero, greater than zero, or not equal to zero. Thanks for the help.
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    Quote Originally Posted by qbkr21 View Post
    If I am trying to calcuate the domain. There is an absolute value, so would I set the part inside the absolute value brackets to: greater than or equal to zero, greater than zero, or not equal to zero. Thanks for the help.
    Perhaps it would help if you posted the function...

    -Dan
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    I just looking for a general rule...

    denominator: =/ (not equal to zero)
    square root: >= (greater than = to)
    log:> (greater than)
    absolute value: ?
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    Quote Originally Posted by qbkr21 View Post
    I just looking for a general rule...

    denominator: =/ (not equal to zero)
    square root: >= (greater than = to)
    log:> (greater than)
    absolute value: ?
    Then consider the archetype:
    y = |x|

    This function is defined on all real numbers, so the domain is ( -\infty, \infty). The basic idea is that there is a y value for every real x value.

    -Dan
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