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Unknown on both sides of equation: one side exp function the other side plain HELP

  1. Dec 1, 2012 #1
    I am doing a heat transfer problem and I need to solve for the length of something. I have reduced the equation to this:

    [C3/C1*L] = e^(-C2*L)

    Find L
    Where: C1, C2, & C3 are constants

    Please help im in a real bind!
     
  2. jcsd
  3. Dec 1, 2012 #2

    lurflurf

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    Re: Unknown on both sides of equation: one side exp function the other side plain HEL

    You need a function such as the Lambert W function. Otherwise solve numerically.

    C2L e^(C2L)=C1C2/C3

    is the standard form for the Lambert W function
     
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