Power series expansion

Discussion in 'Community Discussion' started by dukebound85, Sep 2, 2010.

  1. dukebound85 macrumors P6

    dukebound85

    Joined:
    Jul 17, 2005
    Location:
    5045 feet above sea level
    #1
    So I am trying to assist my younger brother with hw help and he's working on power series.......and despite having taken much math, I forgot how to do it lol

    The function is this

    g = g.o * (1+z/a)^-2 where g.o and a are constants and a>>z

    I was playing around with my old text books and I was coming up with

    g.0 + (1+z/a) * (z/a)^2 + (z/a)^3 ....etc but dont think its correct
     
  2. Hellhammer Moderator

    Hellhammer

    Staff Member

    Joined:
    Dec 10, 2008
    Location:
    Finland
    #2
    g.o * (1 + (a/z)^2)

    g.o + g.o(a²/z²)

    Can't promise that it's right but that's my guess.
     

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