2 8*t t + --- + 1 5
t^2 + (8*t)/5 + 1 при t = 1/2
t^2 + (8*t)/5 + 1
(1/2)^2 + (8*(1/2))/5 + 1
(1/2)^2 + (8/2)/5 + 1
41/20
1.0 + t^2 + 1.6*t
5 + t*(8 + 5*t) --------------- 5
2 5 + 5*t + 8*t -------------- 5