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递推数列是高中数学的重要内容,利用构造新数列的方法解决递推数列的通项问题,是规律性、探究性较强的一块内容.然而对学生而言,构造的方法虽然能够高效快捷的求出通项,但却很难掌握,原因在于很难准确掌控好构造的方向,即到底要构造出什么
The recursive sequence is an important part of high school mathematics. Using the method of constructing a new sequence to solve the general term of the recursive sequence is a regular and inquiring part. However, for students, the method of construction is efficient and efficient. Finding the general term, but it is difficult to master, because it is difficult to accurately control the direction of the construction, that is, what to construct