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Recursion Formula

  1. Nov 7, 2004 #1
    Do you guys know what the recursion formula for this series?

  2. jcsd
  3. Nov 8, 2004 #2


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    [tex]a_n = r^n[/tex]


    [tex]a_{n+1} = r^{n+1} = r \times r^n = r a_n[/tex]

    but you knew that! :-)
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