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Math Help - Help solving

  1. #1
    Junior Member
    Joined
    Sep 2008
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    40

    Help solving

    .89=.76(1.04)^x
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  2. #2
    Newbie
    Joined
    Aug 2009
    Posts
    1
    .89=.76(1.04)^x
    First get rid of the .76 on the RHS (right hand side)
    (.89/.76) = 1.04^x
    Now lets take the natural log of each side
    ln (.89/.76) = ln 1.04^x
    Now lets use our log/ln rules for the RHS
    ln (.89/.76) = x (ln 1.04)
    Now just divide on the RHS and you found the exact value of x
    x = [ ln (.89/.76) / ln (1.04) ]
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