(i) If we choose , you'll easily find that satisfies the given hypothesis. In this case, we have .
(ii) If we choose
then, and also satisfies the given conditions. In this case, .
Taking into account these results my questions are:
(a) Have you quoted the exact formulation of the problem ?.
(b) Are there additional hypothesis for and ?
(c) In what terms we have to find those limits ?