题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013005501-25108.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013005501-83102.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013005501-21621.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013005501-25108.gif)
(2)试问
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013005502-84683.gif)
答案
(2)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013005502-37888.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013005502-84683.gif)
解析
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013005501-83102.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013005502-38660.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013005501-25108.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013005502-53441.gif)
由
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013005501-21621.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013005503-27452.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013005503-89512.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013005503-48662.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013005503-65504.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013005503-17308.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013005504-56126.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013005504-76912.gif)
(2)解:设
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013005502-84683.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013005503-48662.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013005504-55091.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013005504-80984.gif)
即
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013005505-15606.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013005503-17308.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013005502-37888.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013005502-84683.gif)
核心考点
试题【(12分)在各项均为负数的数列中,已知,且,(1)求证:数列是等比数列,并求出通项公式。(2)试问是否为该数列的项?若是,是第几项?若不是,请说明理由。】;主要考察你对等差数列等知识点的理解。[详细]
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013005445-78041.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013005445-36896.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013005445-37055.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013005445-22218.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013005446-83979.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013005446-54673.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013005445-78041.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013005445-22218.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013005446-59487.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013005446-77142.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013005445-36896.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013005446-44479.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013005422-81919.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013005422-90806.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013005422-54726.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013005423-79993.gif)
(1)求
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013005423-82248.gif)
(2)若
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013005423-12344.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013005423-45658.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013005423-73496.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013005424-19837.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013005424-84383.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013005422-90806.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013005424-90991.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013005411-34312.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013005412-37347.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013005412-36089.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013005411-34312.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013005412-32537.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013005412-79494.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013005413-59914.jpg)
A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013005355-29861.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013005355-42976.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013005356-85376.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013005356-65898.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013005356-35369.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013005356-33182.gif)
(1) 求数列
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013005355-29861.gif)
(2) 设
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013005356-90494.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013005357-23155.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013005342-36762.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013005342-30016.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013005343-18880.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013005343-40786.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013005343-73879.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013005343-72078.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013005344-88807.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013005344-87940.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013005344-23221.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191013/20191013005344-20565.gif)
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