O.Stolz定理的证明及推广

The Testament and Popularization of O.stolz Theorem

对处理序列{YnXn}的未定型极限有效方法O.Stolz定理给予理论证明,并将其推广到函数的未定型极限的求法。

To prove the O.stolz theorem which is an effective way to handle the undesigned limit of the sequence {YnXn},and Popularize this theorem to function's undesigned limit In theory.