Before revision:  (ii) 0<c^*(x,h)<\lambda h when x_1(h)<x< (h); (iii) \lambda h\leq c^*(x,h)<h when (h)\leq x<x_2(h);
After revision:  (ii) 0<c^*(x,h)<\lambda h when x_1(h)<x<  (h)\leq x<x_2(h);