从近年高考来看,可以知道数列的考查占高中数学的分量比较大,也是区别尖子生的重要分界线.非常规数列,也就是指非等比、等差数列,在求通项公式方面,题型比较多,方法与技巧也比较多,很多考生往往因为这一点,而产生畏惧和退缩的心理.可是,只要我们仔细分析,即使它的题型变化大,解题方法思路也多元化,但都有章可循.在此,就以求递推数列通项公式作为例子,对一些方法与技巧进 In recent years college entrance examination from the point of view, we can see that the number of high school mathematics test component is relatively large, but also distinguish the top line of the important boundaries of non-conventional series, which means that non-geometric ratio, arithmetic sequence, Many types of questions, methods and techniques are more, many candidates often because of this, resulting fear and withdrawal of psychology.However, as long as we carefully analyze, even if it changes the type of questions, the problem-solving method of thinking is also diverse, But there are rules to follow. Here, to recursive sequence formula as an example, some of the methods and techniques into