Option 23 DHS 5.2

If the total amount of your purchases from the seller Chelovek10000 more than:
- 1865 ₽ the discount is 10%
- 933 ₽ the discount is 5%
- 466 ₽ the discount is 3%

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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