Вариант 17 ИДЗ 5.2

EDS - 5.2
№1.17. Prove that the functions f (x) = 3sin2 4x; φ (x) = x2 - x4 as x → 0 are infinitesimal of the same order of smallness.
№2.17 Find limits.
№3.17 Investigate these functions for continuity and build their graphs.
№4.17 Investigate these functions for continuity at the specified points. f (x) = ....; x1 = 2; x2 = 3.