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数列知识是高考中的重要考查内容,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,有了解析式便可研究其性质等;而有了数列的通项公式便可求出任一项以及前几项和等。因此,求数列的通项公式往往是解题的突破口,关键点。
The knowledge of sequence is one of the important examinations in the college entrance examination, and the general formula of sequence is one of the core contents of the sequence. It is the same as the analytic formula of the function. The general formula can find any and the first few and so on. Therefore, the general formula for calculating the number of columns is often the problem-solving breakthrough, the key point.