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Math Help - Quick limit question

  1. #1
    Super Member craig's Avatar
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    Quick limit question

    In a lot of questions there is, \lim_{x \to 0^{+}}.

    I know this means as x tends towards zero positive, but I can't remember whether this means x is going from +\infty \to 0 or from -\infty \to 0?

    Thanks in advance.
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  2. #2
    Super Member Deadstar's Avatar
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    Quote Originally Posted by craig View Post
    In a lot of questions there is, \lim_{x \to 0^{+}}.

    I know this means as x tends towards zero positive, but I can't remember whether this means x is going from +\infty \to 0 or from -\infty \to 0?

    Thanks in advance.
    It's the first one. As x appoaches 'from the right'. I suppose that doesn't actually mean from +\infty rather just from somewhere at the right of x (after all they may be asymptotes and what not to the right of x so if we approached from +\infty we would hit those first!)
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  3. #3
    Super Member craig's Avatar
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    Quote Originally Posted by Deadstar View Post
    It's the first one. As x appoaches 'from the right'. I suppose that doesn't actually mean from +\infty rather just from somewhere at the right of x (after all they may be asymptotes and what not to the right of x so if we approached from +\infty we would hit those first!)
    Thankyou
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