(7х — у)і + хуј) . dr C is the arc of the circle x? + y = 1 counterclockwise from (1,0) to (-1,0). %3D The curve C can be parametrized by r(t) = ? Σ te Σ.pi Σ| (use the most natural parametrization) Express the line integral in terms of t ((7x – y)i + xyj) · dr = Σ dt . where Σ b = pi Σ Evaluate the integral (7х — у)і + хуј) dr %3D Σ

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