Use the surface integral in Stokes' theorem to calculate the circulation of the vector field πΉΜ
(π₯, π¦, π§) = <β3π§, π¦^2, 2π¦> around the curve C β the intersection of the cylinder π₯^2 + π¦^2 = 4 and the plane π₯ β 3π¦ β 2π§ = 1, in the counterclockwise direction if viewing from above.