Graph of a logistic function
Logistic functions have an "s" shape, where the function starts from a certain point, increases, and then approaches an upper asymptote.
Source
Boundless vets and curates high-quality, openly licensed content from around the Internet. This particular resource used the following sources:
"Logistic-curve.svg.png."
https://en.wikipedia.org/wiki/Logistic_function#/media/File:Logistic-curve.svg
Wikipedia
Public domain.
