this article mainly discusses about how to take advantage of infinitesimal quantity to get the limit of power-exponential function.
本文讨论了在幂指函数求极限的过程中利用等价无穷小量代换,提出了四条定理,并给出了证明。
in this paper, the link between infinitesimal quantity and some important notions in differential and integral calculus, and the simple application of infinitesimal in limit operation are discussed.