1. Solve the following tasks:
1.2 isosceles triangle with a base and a base angle α enter parallelogram largest area so that one of its sides lying on the ground, and the other on the side of the triangle. Find the length of the sides of the parallelogram.

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

3. Carry out a full investigation of these functions and build their schedules.
3.2 y = x + ln (x2 - 4)

4. Find the minimum and maximum values of the function y = f (x) on the interval [a; b]
4.2 y = 3x / (x2 +1), [0; 5]

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