1. Solve the following tasks:
1.28 The window has a rectangular shape, complete semicircle. The perimeter of the window is 15 m. The radius of the semicircle which window is the largest amount of light to pass?

2. Carry out a full investigation of these functions and build their schedules.
2.28 y = (5x4 + 3) / x

3. Carry out a full investigation of these functions and build their schedules.
3.28 y = x2 - 2lnx

4. Find the minimum and maximum values of the function y = f (x) on the interval [a; b]
4.28 y = √3 / 2 + cosx, [0; π / 2]

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