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):

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