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Math Help - two sequence and series problems

  1. #1
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    two sequence and series problems

    I need to calculate the first 10 N's series, in convergant series. If a3=(-1)/24 and a6=1/3



    And another one

    Check where the limit if heading to

    lim (1+0,5+0,25+0,0625+....+0,5^n)
    n-infinity



    I need to return this tomorrow, so i am really desperad seeking help here
    Those are the only ones I can't handle. Plese help me if you can solve this !
    Last edited by hlolli; November 19th 2008 at 01:11 PM.
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  2. #2
    Grand Panjandrum
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    Quote Originally Posted by hlolli View Post
    And another one

    Check where the limit if heading to

    lim (1+0,5+0,25+0,0625+....+0,5^n)
    n-infinity



    I need to return this tomorrow, so i am really desperad seeking help here
    Those are the only ones I can't handle. Plese help me if you can solve this !
    This is a geometric series, and you should know that:

     <br />
\frac{1}{1-r}=1+r+r^2+... \ \ \forall  r \in [0,1)<br />

    (your first question is incomprehensible)

    CB
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  3. #3
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    Thank you, I'm trying best I can to translate to english. Math words in Icelandic are so surreal. But I think I got all problems right now.
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