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 LOABC - rectangular contour with vertices O (0, 0), A (5, 0), B (5, 3), C (0, 3).

Where L - the upper half circle arc x2 + y2 = a2.

Where LOA - parabola arc x = 2y2 from point O (0, 0) to point A (2, 1).

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