(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, â½f-F) with f(0, 0-0. If it is not conservative, type N. A. F (z, y) = (-14z-2y)i + (-2x + 14y)j f(x,y) = f (z,v) = C. F (, y)- (-7 siny)i (-4y - 7xcosy):j f (z,v) = Note: Your answers should be either expressions of x and y (e.g. "3xy + 2y"), or the letter "N"