The logistic function finds applications in a range of fields, including biology (especially ecology), biomathematics, chemistry, demography, economics, geoscience, mathematical psychology, probability, sociology, political science, linguistics, statistics, and artificial neural networks. įor values of x x in the domain of real numbers from − ∞ -\infty to + ∞ +\infty, the S-curve shown on the right is obtained, with the graph of f f approaching L L as x x approaches + ∞ +\infty and approaching zero as x x approaches − ∞ -\infty.
K k, the logistic growth rate or steepness of the curve.
