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

Where LAB - the arc of one revolution x = cost of a screw line, y = sint, z = 2t; A (1, 0, 0); B (1, 0, 4π).

Where L - outline of a square with sides x = ± 1, y = ± 1.

Where LAB - arc of a parabola y = x2 from point A (2, 4) to point B (1, 1).

Where LABO - polygonal ABO (O (0, 0); A (1, 2); B (1/2, 3)) in the positive direction bypass circuit.

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