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Math Help - limits

  1. #1
    Newbie
    Joined
    Apr 2010
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    17

    limits

    how do you show that the limit of a sequence exists? I forget.

    for example limx _{x} \rightarrow-1 x^{3}-3x. im having a brain fart please refresh my memory.
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  2. #2
    Senior Member Tinyboss's Avatar
    Joined
    Jul 2008
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    That's not really a sequence. I'm going to guess that you're supposed to give an epsilon-delta proof of the continuity of f(x)=x^3-3x at x=-1.
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