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Homework Help: Radius and interval of convergence

  1. Mar 28, 2014 #1
    1. The problem statement, all variables and given/known data

    ∑ (x^(n+5))/3n! Find the radius of convergence and interval of convergence

    2. Relevant equations

    3. The attempt at a solution

    I got 0 for the radius and 0 for the interval of convergence using the ratio test. This is no right. Can someone please help me? Thank you
  2. jcsd
  3. Mar 28, 2014 #2

    Ray Vickson

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    Science Advisor
    Homework Helper

    Show your work.
  4. Mar 28, 2014 #3

    Here it is

    Attached Files:

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