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自2007年山东实施新课标高考以来,对数列的考查无一例外(当然除2009年略有不同)的采取了一种固定的考查模式:第一问求数列的通项公式;第二问求数列的前n项和.基本上所有的求和方法都有所涉及:乘公比错位相减法,裂项相消法,分组求和法,根据n的奇偶性分类讨论,并项求和法等.人们猜测2014年的高考数列会考哪种求和方法?我想在各种求和方法都训练到位的前提下,今年的数列题目应该不算是个难题.
Since 2007, the implementation of the new curriculum entrance examination in Shandong since the examination of the series without exception (of course, except for a slight difference in 2009) adopted a fixed test mode: the first asked for the formula series; second question The first n terms and the sum of the columns are listed basically. All summing methods are involved: sums of dislocation subtraction, fission cancellation, group summing, classifying according to the parity of n, Law, etc. People guess what kind of summation will be taken in the 2014 college entrance examination series? I think this series of questions should not be a problem under the premise of various training methods.