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

Answer:

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

Explanation:

g(z)=1/(1+e⁻z)

=d/dz (1/1+e⁻z)

=e⁻z/(1+e⁻z)²

=1/(1+e⁻z) . (1-(1/1+e⁻z))

=g(z)(1-g(z)

Answer 2

Answer:

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

Explanation:

you understand this is quite easy the answer of this question is A