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Math Help - Imaginery Number with tanh

  1. #1
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    Imaginery Number with tanh

    How do I solve this?

    Many thanks.
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  2. #2
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    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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