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Power Series for e^x Homework Help

  1. Dec 15, 2008 #1
    1. The problem statement, all variables and given/known data

    Problem: Find the value of b for which [​IMG]


    2. Relevant equations

    Power series for (1/1+x) or in this case, power series for (1/1+b)

    3. The attempt at a solution


    I keep getting ln (-5/6) as the answer, but apparently the correct answer is ln (5/6). I do not see why.

    Please look at my work and tell me what I am doing wrong.

    [​IMG]
     
  2. jcsd
  3. Dec 15, 2008 #2
    I can't see the problem.
     
  4. Dec 15, 2008 #3
    Go back and write it out with the sums, limits, and ns in their proper places and I think you will see your error.
     
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