高中数学代数与函数一数列106
题目内容

等差数列 http://picflow.koolearn.com/upload/papers/20140824/20140824023203546425.png中,已知前15项的和 http://picflow.koolearn.com/upload/papers/20140824/20140824023203561499.png,则 http://picflow.koolearn.com/upload/papers/20140824/20140824023203577326.png等于(   )

2021-09-28

A.http://picflow.koolearn.com/upload/papers/20140824/20140824023203593428.png

B.

C.image.png

D.

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