Wikipedia:Reference desk/Archives/Mathematics/2018 April 28

= April 28 =

odd, monotone, continuous, bounded
The error function, the hyperbolic tangent and the inverse tangent all have these properties. Have I forgotten any important ones? —Tamfang (talk) 16:24, 28 April 2018 (UTC)
 * Following the links, you can get some more at Sigmoid function.John Z (talk) 19:11, 28 April 2018 (UTC)
 * Thanks. —Tamfang (talk) 22:56, 28 April 2018 (UTC)


 * $$f(x) = \int_0^{x}g(t) dt$$


 * where $$g(t)$$ is an even function such that $$g(t) \geq 0$$ and $$\int_0^{\infty}g(t) dt$$ exists. Count Iblis (talk) 00:55, 29 April 2018 (UTC)