sigmoid_derivative, a Python code which evaluates derivatives of any order for the sigmoid function s(x)=1/(1+exp(-x)).
The information on this web page is distributed under the MIT license.
sigmoid_derivative is available in a C version and a C++ version and a Fortran90 version and a MATLAB version and an Octave version and a Python version.
polpak, a Python code which evaluates a variety of mathematical functions, polynomials, and sequences, including Bell, Benford, Bernoulli, Bernstein, Cardan, Catalan, Charlier, Chebyshev, Collatz, Delannoy, Euler, Fibonacci, Gegenbauer, Gudermannian, Harmonic, Hermite, Hofstadter, Hypergeometric 2F1, Jacobi, Krawtchouk, Laguerre, Lambert W, Legendre, Lerch, Meixner, Mertens, Moebius, Motzkin, Phi, Stirling Numbers, Tau, Tribonacci, Zernike.
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