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Math Help - Please help me solving the equation

  1. #1
    Newbie
    Joined
    Mar 2009
    Posts
    2

    Please help me solving the equation

    Dear Math-Crack,

    I really (!!!) would appreciate you help in solving the following equating for "w":
    r=w*7.8-i / (sqr(7.8+i-2*w*7.8*i))

    Sqr stands for square root. "/" for division
    This is a version of the equation for the so called "part whole correlation" in Statistics (r=part whole correlation).
    I want to reverse the "part whole correltion". To do that I "simply" have to solve the equation for w but I did not succeed!

    Any help would be appreciated!

    sincerly,
    M@ne
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  2. #2
    Newbie
    Joined
    Mar 2009
    Posts
    2

    No answer? I know why!

    Because, shame on me, I made a fault typing the formula:

    It has to be that way:

    Any Ideas?

    Attached Thumbnails Attached Thumbnails Please help me solving the equation-form.gif  
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