2 (x + 1) ---------- 2 x*(x + 2)
(x + 1)^2/(x*(x + 2)^2) при x = 1/2
(x + 1)^2/(x*(x + 2)^2)
((1/2) + 1)^2/((1/2)*((1/2) + 2)^2)
(1/2 + 1)^2/((1/2 + 2)^2/2)
18/25
(1.0 + x)^2/(x*(2.0 + x)^2)
2 1 + x + 2*x --------------- 3 2 x + 4*x + 4*x