1. Calculate the data line integrals (1-4)

Where LAB - astroid curve x = 2cos3t, y = 2sin3t from point A (2, 0) to point B (0, 2)

Where L - circumference x2 + y2 = 4

Where L - a quarter of the circle x2 + y2 + z2 = R2, x2 + y2 = R2 / 4 lying in the first octant.

Where LOBA - a broken OBA; O (0, 0, 0); B (0, 2, 0); A (0, 2, 1).

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