Show that the value of Oxy? dx + (x y+ 2x) dy around any square depends only on the area of the square and not on its location in the plane, C Which of the following double integrals depends only on the area of the region R and not on its location in the plane? O A.' (oxy)dxdy OB. R R oc. JJ (cx)dxdy OD. JJ (claxdy R R The Tangential Form of Green's Theorem is shown below. (Max + Ndy = ] J ON aM ax - dy -dxdy R What part of the function should be substituted for M? M = (Type an expression using x and y as the variables.) What part of the function should be substituted for N? N =(Type an expression using x and y as the variables.)