论文部分内容阅读
数列是高中数学的重要内容之一,也是高考的考查重点.而数列的通项公式,是研究数列的第一个环节,也是最重要的一个环节.有了数列的通项,问题研究起来就方便多了.数列通项公式的求法也很多,根据具体的条件,而采用不同的求法.下面笔者通过一些例题来讲解数列通项公式的几种常见求法.一、观察归纳法通过观察数列的特征,横向看各项之间的关系,纵向看各项与项数n的内在联系,从而归纳出数列的通项.
Series is one of the important content of high school mathematics, but also the focus of examinations of the college entrance examination, and the series of general formula is to study the first part of the series, but also the most important part of a sequence of items, the problem is studied Convenient and more.Number of formulas for the general method of seeking a lot, according to the specific conditions, and the use of different methods.The following author through a few examples to explain several common formulas of numerical formulas.First, the observation of induction through the observation series Characteristics, the horizontal relationship between the various items, look at the vertical relationship between the number of items n, thus summed up the number of items.