Question

If g(z) is the sigmoid function, then its derivative with respect to z may be written in term of g(z) as
A) g(z)(1-g(z))
B) g(z)(1+g(z))
C) -g(z)(1+g(z))
D) g(z)(g(z)-1)

Answer 1

Solution

A) g(z)(1-g(z))

Answer 2

If g(z) is the sigmoid function, then its derivative with respect to z may be written in term of g(z) as g(z)(1-g(z)).

The correct option is A) g(z)(1-g(z)).

Sigmoid function is the mathematical function that has a "S"-shaped characteristic curve or a sigmoid curve.

The sigmoid function often refers to various special cases of logistic function and defined by formula.