1. Calculate the data line integrals (1-4)
Where LAB - section of the line AB; A (1, 2); B (3, 6).
Where L - cardioid curve ρ = (1 + cosφ), 0 ≤ φ ≤ π / 2
Where L - a quarter of the circle x2 + y2 + z2 = R2, y = x, which lies in the first octant.
Where L - the arc of the ellipse x = acost, y = bsint, «traversed" counterclockwise.
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