论文部分内容阅读
排列组合问题是高中数学的一个难点,也是高考的必考内容,其思维方法独特,解题思路新颖,如果对题意理解出现偏差,则容易出现计数中的“重复”和“遗漏”.解排列组合问题,首先必须认真审题,明确问题是排列问题还是组合问题,其次是抓住问题的本质特征,灵活运用基本原理和公式进行分析解答,同时,还要注意讲究一些基本策略和方法技巧.
The problem of permutation and combination is a difficult point in high school mathematics, and it is also a must-examination content of the college entrance examination. It has a unique way of thinking and a novel idea of solving problems. If there is a deviation in understanding the meaning of a question, it is prone to “repeated” and “missing” in counting. ".. Solve the problem of arranging and combining, we must first carefully examine the problem, make it clear whether the problem is arranging or combinatorial problems, and secondly, grasp the essential characteristics of the problem, and use the basic principles and formulas to analyze and answer them flexibly. At the same time, we must pay attention to some basic strategies. And method tips.