摘要: 组合恒等式和二项式定理 0 定义 \(\begin{aligned}{n\choose m}=\dfrac {n!}{m!(n-m)!}\end{aligned}\) 1 常规 \(\begin{aligned}{n\choose m}={n\choose n-m}\end{aligned}\) 还 阅读全文
posted @ 2024-03-06 13:46 CloudWings 阅读(16) 评论(0) 推荐(0) 编辑