极限方法是计算无限量的基本方法

Limit Method Is The Basic Method to Calculate Infinite Quantity

无限量计算这个本来令人不太容易解决的问题，利用极限概念却能准确找到恰当支点，而极限方法就是解决问题的有效杠杆．当极限式是未定式：等7种未定式时，如何给极限式定值，便成了另外一个问题了。同时，在研究函数的连续性、反常积分计算等很多问题中都涉及到极限计算问题，极限计算是高等数学中最基本却最常用的计算．极限计算方法有多种，主要是根据极限式的特点来确定可以用什么方法最合适。通过极限式的恒等变形，消去零因子或无穷大因子、利用重要极限结果、洛必达法则、级数展开等方法对极限的未定式定值的方法因题而异，方法繁多。但是，有些题目并不能通过对极限式的直接变形，然而，仍然可另辟蹊径达到计算的目的。利用极限方法解决无限量计算是数学中基本的方法．

infinite quantity is very hard but limit method is an very efficiency method to solve it. But how to valuing infinite quantity is a problem when infinite quantity is indeterminate form as,etc. Meantime, when individuals analysing continuity of function or improper integral or other calculations, there are always questions about infinite quantity, it is the most basic and common used calculation in advanced maths. There also many ways to solve infinite quantity, using which method depends on the characteristic of limiting equation, and limit method is tbase method to calculate infinite quantity.