Question

Можете пожалуйста помочь

Answer 1

f(2) = (1 - 1)/(1 + 1) = 0.

f(4) = (1 - 0)/(1 + 0) = 1.

f(3) = (1 - 5)/(1 + 5) = -4/6 = -2/3.

f(5) = (1 + (2/3))/(1 - (2/3)) = 5.

f(2) + f(4) + f(5) = 0 + 1 + 5 = 6.