Imaginery Number with tanh

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Nov 5th 2011, 09:39 AM
BabyMilo

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Imaginery Number with tanh

How do I solve this?

Many thanks.
Nov 5th 2011, 10:16 AM
Plato

Re: Imaginery Number with tanh

I will give you the basics here.
$\tanh(w)=\frac{e^w-e^{-w}}{e^w+e^{-w}}=\frac{e^{2w}-1}{e^{2w}+1}$

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