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How to solve this (nonlinear?) equation in Matlab

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predki

predki

Petroleum
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Jun 4, 2007
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Hi,
Could you help me find solution (L) of below equation in Matlab:

L=((gT^2)*tanh(2*pi*d/L))/(2pi)

T,g,d are given
L = ?
You can find L on both sites of equation.So it seems me it has to be solved by iteration.
What function is used in Matlab to solve such equations?
 
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