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Arithmetic and geometric means

  1. Nov 21, 2009 #1
    1. The problem statement, all variables and given/known data

    http://img264.imageshack.us/img264/7505/math.png [Broken]

    2. Relevant equations

    AM = arithmetic mean = (a+b)/2
    GM = geometric mean = sqrt(ab)

    3. The attempt at a solution
    I'm totally stuck on this, substituting does not help at all.
     
    Last edited by a moderator: May 4, 2017
  2. jcsd
  3. Nov 21, 2009 #2

    tiny-tim

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    Hi deathnote93! :smile:

    (have a square-root: √ :wink:)

    Hint: Let a = cb. ​
     
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