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Statistics infinte series

  1. Feb 21, 2013 #1
    My statistics professor wanted me to remember an infinite series sum, but i cant remember what it was
    i think it was either ( E(1/n^2) 1 to infinite ) or ( E(1/(L+n^2)) 0 to infinite ) or ( E(a^n) 0 to infinite where n is between 0 and 1)
    i think it was the 2nd one, does anyone know how to calculate either of these?
     
  2. jcsd
  3. Feb 22, 2013 #2

    mfb

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    2017 Award

    Staff: Mentor

    E should be the sum symbol(##\Sigma##)?
    The first one has a simple solution, I don't think I ever saw any closed form for the second.
    At the third one, do you mean "a is between 0 and 1"? In that case, it has a nice value as well, which is very useful to know.
     
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