递推法是求解物理难题的常用方法,在近几年高考的压轴题的求解中常常需要用到.递推法尤其适用于解决物体与物体发生多次作用的情景.具体方法是:先分析某一次作用的情况,得出结论,再根据多次作用的重复性和它们的共同点,把结论推广,然后结合数学知识求解.用递推法解题的关键是导 Recursive method is a common method to solve physics problems. It is often used in the solution of the final axis of the college entrance examination in recent years. The recursive method is especially suitable for solving situations where objects and objects have multiple interactions. The specific method is: first analyze A certain role of the situation, draw a conclusion, and then according to the repetition of multiple effects and their common points, the conclusions are generalized, and then combined with mathematical knowledge to solve. The key to solve problems with recursive method is