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在高考中数列部分的考查既是重点又是难点,不论是选择题或填空题中对基础知识的考查,还是压轴题中与其他章节知识的综合,而数列的通项公式又是数列的核心内容之一,它如同函数中的解析式一样,有了解析式便可更好研究其性质等,所以抓住数列的通项公式通常是解题的关键和解决数列难题的瓶颈。求通项公式也是学习数列时的一个难点。由于求通项公式时渗透多种数学思想方法,因此求解过程中往往显得方法多、灵活度大、技巧性强。下面我就谈谈求数列通项公式的几种方法。
In the college entrance examination part of the exam is both an important and difficult points, whether multiple-choice questions or fill in the blank examination of the basics, or the finale of the questions and other sections of the knowledge synthesis, and the series of general formula is the core of the sequence As one of the analytic equations in a function, analytic equations can be used to better study their properties. Therefore, capturing the general formulas of a series of equations is usually the key to solve the problem and solve the bottleneck of a series of problems. Solving the general formula is also a difficult time to learn a series. Due to the infiltration of a variety of mathematical ideas and methods when solving the formula, it often appears that there are many methods, great flexibility and high skill in the solution process. Now I will talk about several ways to solve the general formula.