论文部分内容阅读
一、课堂趣遇二项式展开一挥间二项式定理复习课,老师提问.例1如何将二项式(a+b)6展开?小π抢答:展开后共有6+1=7项.小e续答:7项都是6次齐次式,a的指数从6降到
First, class interest binomial start a wave of binomial theorem review class, the teacher asked. Example 1 How to expand the binomial (a + b) 6? Small π rush A: After the expansion of a total of 6 + 1 = 7 items Small e continues to answer: 7 items are 6 times homogeneous, a’s index dropped from 6