Math Is Fun Forum

b31den

Guest

Formula for sum of Series

Hi,

I dont really understand what the question is asking for or where to start.  I think it may involve working backwards from this sum to an f(x)?

Find a fomula for the sum of the series

∑ ((n+1)*x^n)/(11^(n+2))  , n=0 to inf

for -11 < x <11

Thanks for the help!

gAr

Member

Registered: 2011-01-09

Posts: 3,482

Re: Formula for sum of Series

Hi b31den,

Last edited by gAr (2011-06-14 16:09:13)

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"Believe nothing, no matter where you read it, or who said it, no matter if I have said it, unless it agrees with your own reason and your own common sense"  - Buddha?

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soroban

Member

Registered: 2007-03-09

Posts: 452

Re: Formula for sum of Series

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