Let S be the square in the xy-plane shown in the figure below, oriented with the normal pointing in the positive z-direction. Estimate JF where F is a vector field whose values at the labeled points are A ċ ffs F. ds B F(A)=(3, 6, 2), F(C)=(-4,8, 9), F. dS F(B) = (-3, -6, 8) F(D)= (-8,2,8)

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