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Homework Help: Find an f that satisfies these statements - Deltas and Epsilons

  1. May 27, 2013 #1
    1. The problem statement, all variables and given/known data

    Find an f that satisfies this statement:
    \lim_{x\rightarrow a} f(x)≠L

    [tex]∀ε>0 ∃δ>0∃ x:0<|x-a|<δ AND |f(x)-L|<ε[/tex]

    2. Relevant equations

    3. The attempt at a solution

    I'd just like a small hint on how I would go about finding a function. How can there be a delta for every epsilon and the rest of the statement is fulfilled, but there is no limit? The notation's just a tad confusing.
  2. jcsd
  3. May 27, 2013 #2


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    Science Advisor
    Homework Helper

    You aren't quantifying this right. There just has to be one epsilon without any corresponding delta. lim x->0 x isn't equal to 1. Prove it.
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