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Thread: Real analysis homework help

  1. April 28th 2009, 05:39 PM #1
    trojanlaxx223
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    Real analysis homework help

    Define f:R \rightarrow R by f(x)=x if x is rational and f(x)=0 if x is irrational. Prove that f has a limit at c iff c=0.
    Last edited by Jhevon; April 28th 2009 at 08:33 PM.
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  2. April 28th 2009, 08:27 PM #2
    Gamma
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    Been there, done that.

    http://www.mathhelpforum.com/math-he...mit-proof.html
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