对数列规律的把握就是想法知道数列的通项,在求数列的通项问题中,一种是已知数列的项或者前几项求数列通项,另一种是已知数列的递推式求数列通项,特别是递推式中含根式时,求数列通项显得更复杂一些,本文针对含根式的递推式展开讨论,给出数列通项模型,较好地解决了一类根式递推式数列的通项问题,并得到一般结论. Grasp the law of the sequence is the idea of ​​knowing the generalization of the sequence, in the general problem of seeking the number of columns, one is the known sequence of items or the first few items of the general items, the other is known sequence recursion Seeking the general term, especially when the recursion contains radical, it is more complicated to find out the general term. In this paper, we discuss the recursion with root, Recursive series of general problems, and get the general conclusion.