lim x-> ∞ (2x^3 - 3x^2 + 1) / (x^3 + 4x^2 + 2x)
Делим на старшую степень
lim x-> ∞ (2x^3/x^3 - 3x^2/x^3 + 1/x^3) / (x^3/x^3 + 4x^2/x^3 + 2x/x^3) =
= lim x-> ∞ (2 - 3/x + 1/x^3) / (1 + 4/x + 2/x^2) =
= (2 - 3/∞ + 1/∞^3) / (1 + 4/∞ + 2/∞^2) =
= (2 - 0 + 0) / (1 + 0 + 0) = 2/1 = 2