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Math Help - Can I do it like the proof for sqrt of 2

  1. #1
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    Can I do it like the proof for sqrt of 2

    Prove that there is no rational root whose square is 12?
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  2. #2
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    Quote Originally Posted by Nichelle14
    Prove that there is no rational root whose square is 12?
    I use the proof based on Euclid's Method.
    Do you know that one? It is completely analogous answering your question "Can it do it like sqrt of 2?".
    --------
    Look here
    I can show you how to use this theorem to prove that it irrational.
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  3. #3
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    no I do not know.
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  4. #4
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    How are
    Susie38 and Nichelle14 Related?
    Are you the same user?
    ------
    Note, what I prove in that thread in the end is this. "That a square root of an integral number is either integral or irrational"

    Note that there is no integer such as, x^2=12 why? Very simple, note the first few values,
    1^2=1,2^2=4,3^2,=9,4^2=16 it never gives 12, since anything thing greater then 4, will for certainly give a value greater than 12 because this sequence of square are increasing they are simply to big to be equal to 12, thus there is no such x. Thus, by the theorem its root must be irrational.
    Last edited by ThePerfectHacker; June 11th 2006 at 06:44 PM.
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  5. #5
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    yes. the same. I forgot my password, but figured it out. Does it matter? Should i only use one? Also it depends on what computer i log in at home. I don't always pay attention to what my user name is at the time. My computer automatically remembers the user name and password.
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  6. #6
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    Quote Originally Posted by Susie38
    yes. the same. I forgot my password, but figured it out. Does it matter? Should i only use one? Also it depends on what computer i log in at home. I don't always pay attention to what my user name is at the time. My computer automatically remembers the user name and password.
    No, no problem. Your IP matches so I assumed you were the same.
    You can ask the administrator to reset your password, if that is necessary. Also, you can sent yourself an e-mail with the password.
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