1. Solve the following tasks:
1.7 wire whose length l m, you must enclose a bed having the shape of a circular sector. What should be the radius of the circle to the area was the highest beds.

2. Carry out a full investigation of these functions and build their schedules.
2.7 y = lnx / √x

3. Carry out a full investigation of these functions and build their schedules.
3.7 y = xe1 / x

4. Find the minimum and maximum values of the function y = f (x) on the interval [a; b]
4.7 y = ((x + 1) / x) 3 [1; 2]

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