DHS - 5.2
№1.27 Prove that the function f (x) = arcsin 2x; φ (x) = 8x as x → 0 are the infinitesimal of the same order of smallness.
№2.27 Find limits.
№3.27 investigate these functions continuity and build their schedules.
№4.27 investigate these functions continuity at these points. f (x) = ....; x1 = 1; x2 = 2;

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