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Thread: Continuous function

  1. November 11th 2008, 10:38 AM #1
    nikolany
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    Continuous function

    Is there a function f:R-->R that is continuous at π and discontinuous at all other numbers?

    Thx
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  2. November 11th 2008, 11:26 AM #2
    5bucksperproblem.com
    5bucksperproblem.com is offline
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    yes,

    y=(x-n)^18 for rational x, y=0 for irrational x
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