高中数学代数与函数一数列106
题目内容

数列 http://picflow.koolearn.com/upload/papers/20140824/20140824020045427415.png的前n项和为 http://picflow.koolearn.com/upload/papers/20140824/20140824020045443627.png,则a n=(      )

2021-09-28

A.

B.

C.http://picflow.koolearn.com/upload/papers/20140824/20140824020045459908.png

D.http://picflow.koolearn.com/upload/papers/20140824/20140824020045474933.png

题目答案

试卷相关题目

最新试卷
热门试卷

长理培训客户端 资讯,试题,视频一手掌握

去 App Store 免费下载 iOS 客户端