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Math Help - infinite surd problem

  1. #1
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    infinite surd problem

    hey....i need some help...all i need to know is where does or how does
    b= 2c+ 1 in the following part of a question in a thread posted on infinite surds in this forum. Any help would be appreciated. Thx

    Quote Originally Posted by Soroban

    Hello, starvin-marvin!


    We have: ., for some integer

    . . Then: .

    We see that:


    Let: ------ Where does this come from ?

    Then [1] becomes: .

    Hence, must be the product of two consecutive integers.


    Then: ., an integer.
    Last edited by mr fantastic; March 2nd 2009 at 10:17 PM. Reason: Added quote tags
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  2. #2
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    any number of the form (2c+1) is an odd number.

    now,b is a variable odd number & thus for any integral value of c,u get the values of b accordingly.
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  3. #3
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    Quote Originally Posted by sbcd90 View Post
    any number of the form (2c+1) is an odd number.
    and, conversely, any odd number is of the form 2c+ 1 for some integer c?

    [quot]now,b is a variable odd number & thus for any integral value of c,u get the values of b accordingly.[/QUOTE]
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  4. #4
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    Thx, however, another question is that..why do we have to apply the formula to deduce the k= the product of two consective integers? is there a reason or antoher way? Thx for the replies
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  5. #5
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    nevermind guys...i found the answer to my own question! thx for all your help
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  6. #6
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    Consensus

    Yes, I agree.
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  7. #7
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    Quote Originally Posted by moe23 View Post
    hey....i need some help...all i need to know is where does or how does
    b= 2c+ 1 in the following part of a question in a thread posted on infinite surds in this forum. Any help would be appreciated. Thx
    This quote was taken from a thread that was closed because the question was part of an IB portfolio assessment. I can only assume you have asked your question in a new thread because you are doing the same assessment ans were trying to conceal this fact.

    Thread closed.
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