(Solved) Let A be the region in the xy-plane between the circles x^2+y^2=1 and x^2+y^2=4 Let F(x, y)= . Use Green's Theorem to evaluate \oint_C
Question: Let \(A\) be the region in the xy-plane between the circles \(x^{2}+y^{2}=1\) and \(x^{2}+y^{2}=4\) Let \(\vec{F}(x, y)=\left\langle-y^{3}, 2\right\rangle .\) Use Green's Theorem to evaluate \(\oint_{C} \vec{F} \cdot \mathrm{d} \vec{s}\) where \(C\) is the boundary of \(A\) with the outer circle orientated counterclockwise and the inner circle orientate clockwise (in other words, with the entire boundary of \(A\) orientated in the positive direction).
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