摘要: 二项式系数练习题目 \(\mathcal{No.}1\) \(3^{5}\times2^{13}\times\binom{18}{5}\) \(0(无此项)\) \(\mathcal{No.}2\) \(\because \sum_{k=0}^n\binom{n}{k}x^{n-k}y^{k}=(x 阅读全文
posted @ 2021-11-15 16:52 kid_magic 阅读(288) 评论(0) 推荐(0) 编辑