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Math Help - solving for f

  1. #1
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    solving for f

    the problem is x=(f)log(f) and i have to solve for f.....any ideas...i've hit about 10 road blacks haha
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  2. #2
    MHF Contributor Mathstud28's Avatar
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    I'd say

    use the fact of logarithmic rules so that it now reads x=\ln(f^{f}) then...go e^{x}=f^{f} then use the lambert-W function as was posted in your other trhead
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  3. #3
    is up to his old tricks again! Jhevon's Avatar
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    Quote Originally Posted by JesseHackett View Post
    the problem is x=(f)log(f) and i have to solve for f.....any ideas...i've hit about 10 road blacks haha
    how about using the Lambert W Function?

    x = f \ln f

    \Rightarrow x = \ln f^f

    \Rightarrow e^x = f^f

    now see post #3 here
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