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

Where L - the arc of the ellipse x = 3cost, y = 2 sint, «traversed" in a positive direction of the bypass

Where LABCD - rectangular contour with vertices A (2, 0), B (4, 0), C (4, 3), D (2, 3).

Where L - circumference z2 + y2 = 4.

Where LOA - arc of the cubic parabola y = x3 from point O (0, 0) to point A (2, 8).

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