1. Solve the following tasks:
1.19 Of all the cones with this side surface S to find the one with the greatest volume.

2. Carry out a full investigation of these functions and build their schedules.
2.19 y = (x - 1) e3x + 1

3. Carry out a full investigation of these functions and build their schedules.
3.19 y = x4 / (x3 - 1)

4. Find the minimum and maximum values of the function y = f (x) on the interval [a; b]
4.19 y = xlnx, [1 / e2; 1]

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