Wolfram Language & System 10.0 (2014)|Legacy Documentation

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gives the logistic sigmoid function.


  • Mathematical function, suitable for both symbolic and numeric manipulation.
  • In TraditionalForm, the logistic sigmoid function is sometimes denoted as .
  • The logistic function is a solution to the differential equation .
  • LogisticSigmoid[z] has no branch cut discontinuities.
  • LogisticSigmoid can be evaluated to arbitrary numerical precision.
  • LogisticSigmoid automatically threads over lists.
Introduced in 2014