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Math Help - Prove or Disaprove

  1. #1
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    Prove or Disaprove

    Prove or Disaprove: if N is odd, then N sqaured + 1 odd
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  2. #2
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    Quote Originally Posted by sderosa518 View Post
    Prove or Disaprove: if N is odd, then N sqaured + 1 odd
    Please post where are you getting stuck - can be done easily based on some of the earlier posts
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  3. #3
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    Quote Originally Posted by sderosa518 View Post
    Prove or Disaprove: if N is odd, then N sqaured + 1 odd

    Choose an odd N and do it...is it true or not?

    Tonio
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  4. #4
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    Quote Originally Posted by tonio View Post
    Choose an odd N and do it...is it true or not?

    Tonio
    Yes, but maybe for n_0 it will be true and for n_1 it won't... :P
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  5. #5
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    Quote Originally Posted by sderosa518 View Post
    Prove or Disaprove: if N is odd, then N sqaured + 1 odd
    Let n = 2m + 1. Square it and add 1. What happens?

    NB: Post #3 provides an obvious thing to do first.
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