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Odd and even function

  1. Aug 19, 2007 #1
    f(x) is an even function if f(-x) = f(x) for any x in the domain of f.
    Now I say that f(x) = x^2 is defined on [-5,10]. Can I say f(x) is an even function?
  2. jcsd
  3. Aug 19, 2007 #2
    Last edited: Aug 19, 2007
  4. Aug 19, 2007 #3
    No, you can't.
    An odd or even function must be defined on a symmetric domain.
    But [-5,10] is not symmetric.
  5. Aug 19, 2007 #4


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    Is f(8)= f(-8)?
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