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Math Help - Continuity..again.

  1. #1
    Newbie riddikulus's Avatar
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    Continuity..again.

    Show that the following function is continuous only at x=0 :

    f(x) = x for x rational
    -x for x irrational
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  2. #2
    MHF Contributor
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    Re: Continuity..again.

    One may wish to start with the definition of continuity. Let's see what you have.
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