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Math Help - Sum of 2^x

  1. #1
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    Sum of 2^x

    Hi guys,
    What is the Sum of 2^x from x=1 to N?

    Thanks
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  2. #2
    is up to his old tricks again! Jhevon's Avatar
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    Quote Originally Posted by feiyingx View Post
    Hi guys,
    What is the Sum of 2^x from x=1 to N?

    Thanks
    this is a geometric series, see here for the formula's to calculate the sum

    what's your answer?
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  3. #3
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    2^(N+1)-2
    =D

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  4. #4
    is up to his old tricks again! Jhevon's Avatar
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    Quote Originally Posted by feiyingx View Post
    2^(N+1)-2
    =D

    Thank you
    yes, good
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