1. Solve the following tasks:
1.3 Find the ratio between the radius R and the height H of the cylinder having a given volume V of the smallest total surface.

2. Carry out a full investigation of these functions and build their schedules.
2.3 y = e1 / (5 + x)

3. Carry out a full investigation of these functions and build their schedules.
3.3 y = 2 (x + 1) 2 / (x-2)

4. Find the minimum and maximum values of the function y = f (x) on the interval [a; b]
4.3 y = (2x - 1) / (x - 1) 2 [1/2; 0]

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