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The logistic function is a function with domain and range the open interval, defined as: Equivalently, it can be written as: Yet another form that is sometimes used, because it makes some aspects of the symmetry more evident, is: For this page, we will denote the function by the letter.We may extend the logistic function to a function, where and.et another form that is sometimes used, because it makes some aspects of the symmetry more evident, is: For this page, we will denote the function by the letter. We may extend the logistic function to a function, where and.
Definition of logistic. 1a : of or relating to symbolic logicb : of or relating to the philosophical attempt to reduce mathematics to logic. 2 : of or relating to logistics a logistic problem. 3 logistic : of, represented by, or relating to a logistic curve a logistic process.