How do you get 1.8 fromf(2)=(2)/(1+e^(-(2)) )

Question

How do you get 1.8 from
`f(2)=(2)/(1+e^(-(2)) )`

Answer 1

see explanation

Explanation:

`(2)/(1+e^(-2) )` ← evaluate
`e^(-2)` using calculator

=
`(2)/(1+0.135)`

=
`(2)/(1.135)`

= 1.762.....

≈ 1.8 ( to 1 dec. place )