Let D be the region in 1312 for which the boundary.r curve C 2 3D is given by the parametrization It I t = [ ) 1 +t3 1-(t) = , II} :2 t :1: oo. 1:\" f = M J 1 +t3 Check that the curve C is a closed and find the area of D. Tip. Find a vector field F($,y] = F1(:I:, y}i + F2 [3,yli such that 3P5 3131 _ 1 3: By and applyr Green's theorem. mm] = E