本文从一道高考题出发,分析了这道考题的考点与难点,进而在此基础上对题目中所提出的周期性运动进行了探究,通过论证、求解,最后得到了此周期性运动应满足的条件。 This paper starts from a college entrance examination, analyzes the test points and difficulties of this test, and then explores the periodic motions proposed by the subject on this basis, through the demonstration and solution, and finally got the periodic exercise should meet condition.