Calculate the circulation of F⃗=⟨−y3,x3,z2⟩\vec{F} = \langle -y^3, x^3, z^2 \rangleF=⟨−y3,x3,z2⟩ around the circle x2+y2=1x^2 + y^2 = 1x2+y2=1 in the xyxyxy-plane.
2π2\pi2π
3π3\pi3π
4π4\pi4π
π\piπ