Find the extremum of f(x,y) subject to the given constraint, and state whether it is a maximum or a minimum. f(x.y ) = xy; 5X + y = 14 Find the Lagrange function F(x,y,A) F(X, y. A) = Find the partial derivatives Fx, Fy, and Fx Ex F, = There is a value of located at (x,y) = (Type an integer or a fraction. Type an ordered pair, using integers or fractions.)