Вариант 23 ИДЗ 5.2

EDS - 5.2
№1.23 Prove that the functions f (x) = 2x / (3 - x); φ (x) = 2x - x2 as x → 0 are infinitesimal of the same order of smallness.
№2.23 Find the limits.
№3.23 Investigate these functions for continuity and build their graphs.
№4.23 Investigate these functions for continuity at the specified points. f (x) = ....; x1 = -5; x2 = -4