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用二项展开式的通项公式求二项展开式的指定项及系数是学习的一个重点,对于一些整数幂的问题直接用通项公式就可以很容易得出结果,但是对于分数指数幂的问题用通项公式运算就显得有些繁琐,并且运算容易出错,而利用通项公式的导出性质则可以很好地解决这个问题.一、性质及推论
It is a key point of learning to find the specified terms and coefficients of the binomial expansion with the general term formula of the binomial expansion. For some integer power problems, the result can be easily obtained by using the general formula, but for exponential exponential The problem with the general term formula operation is a bit cumbersome, and the calculation is easy to make mistakes, but the use of the derived nature of the general formula can be a good solution to this problem. First, the nature and reasoning