please explan

Section 13.3: Problem 1 (1 point) For each of the following vector fields F, decide whether it is conservative or not by computing the appropriate first order partial derivatives. Type in a potential function f (that is, V / = F) with /(0, 0) = 0. If it is not conservative, type N. A F(z, y) = (12z - Ty)i + ( 7x + By)j f(=, y)=] B. F(z, y) = 6yi + 7zj A(z, y)= C. F(z, y) (6sing)i + ( 1dy + 6z cus y)j /(E,y) = Note: Your answers should be either expressions of x and y (eng. "3xy + 2y"), or the letter "N"