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数列是高中数学的重要内容之一,也是高考考查的重点知识.数列求和又是数列的重要部分,高中教材安排了等差和等比数列求和内容,但数列的形式复杂,绝大多数数列既非等差,也非等比,因此,我们要掌握一些简单数列的求和方法.数列求和常用方法有:(1)公式法;(2)倒序相加法;(3)分组转化法;(4)错位相减法;(5)裂项相消法.
The series is one of the important contents of the high school mathematics, and it is also the key knowledge of the college entrance examination. The summation of the series is also an important part of the series. The high school textbooks have arranged the sum of the arithmetic and equal numbers, but the sequence of the series is complex. The series is neither equal to nor equal, so we must master some methods of summation of simple series. The common methods of series summation are: (1) formula method; (2) reverse order addition method; (3) group transformation Method; (4) Dislocation subtraction method; (5) Split item deconvolution method.