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User:Thomas Baruchel

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Teacher in philosophy and in computer science in France.

Member of the development team of the Sympy library for symbolic mathematics

A continued fraction formula I found for the tanh function (see the link on math.stackexchange.com):

\tanh z = \textrm{K}_{n=1}^{\infty} \frac{1 + \left((n-1) \frac{\pi}{4} z^{-1}\right)^2}{(2n-1) \frac{\pi}{4} z^{-1}}
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