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Math Help - Even Function

  1. #1
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    Even Function

    Here's my question

    "Explain why an even function whose domain contains a nonzero number cannot be a one-to-one function"
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  2. #2
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    Quote Originally Posted by goliath View Post
    Here's my question

    "Explain why an even function whose domain contains a nonzero number cannot be a one-to-one function"
    f(a) = f(-a).
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