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; 11x + y= 14 . . . Find the Lagrange function F(x,y,A) F(x,y,A) = - >( D Find the partial derivatives Fx, Fy, and FX F. x E F1 = There is a value of located at (x.y) = (Type an integer or a fraction. Type an ordered pair, using integers or fractions.)