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Math Help - Proof Question 1

  1. #1
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    Proof Question 1

    Define the function f : R -> R by
    g(x) = x2 if x is rational
    - x2 if x is irrational

    At what point is the function conitunous.
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  2. #2
    MHF Contributor
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    Quote Originally Posted by wvlilgurl View Post
    Define the function f : R -> R by
    g(x) = x2 if x is rational
    - x2 if x is irrational

    At what point is the function conitunous.
    Hint: Consider the graphs of f(x) = x^2 and h(x) = -x^2. Where do they "meet"?
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