Вариант 13 ИДЗ 5.2

EDS - 5.2
№1.13. Prove that the functions f (x) = sin8x; φ (x) = arcsin5x as x → 0 are infinitesimal of the same order of smallness.
№2.13 Find the limits.
№3.13 Investigate these functions for continuity and build their graphs.
№4.13 Investigate these functions for continuity at the specified points. f (x) = ....; x1 = 3; x2 = 4.