User:Thomas Baruchel

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):

$\tanh z={\text{K}}_{n=1}^{\mathrm{\infty }}\frac{1+{((n-1)\frac{\pi }{4}{z}^{-1})}^2}{(2n-1)\frac{\pi }{4}{z}^{-1}}$