题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009105341-56766.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009105341-38965.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009105341-16216.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009105342-26375.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009105342-63486.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009105342-37056.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009105342-40353.png)
A.![]() | B.![]() | C.![]() | D.![]() |
答案
解析
试题分析:设等差数列
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009105341-16216.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009105343-26649.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009105343-76080.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009105344-76048.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009105344-63828.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009105344-13724.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009105345-82916.png)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009105302-57121.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009105302-73353.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009105302-46948.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009105303-36624.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009105211-46794.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009105211-16421.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009105211-44504.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009105212-97399.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009105212-60726.png)
A.180 | B.90 | C.72 | D.100 |
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009105138-79596.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009105138-73056.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009105138-33076.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009105138-23902.png)
(1)求数列
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009105139-74121.png)
(2)若函数
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009105139-58881.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009105139-72839.png)
(3)设
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009105139-25995.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009105140-33969.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009105140-89670.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009105140-23732.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009105140-94828.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009105140-89670.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009105140-23732.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009105050-87725.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009105050-54530.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009105050-24144.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009105050-87725.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009105051-63799.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009104750-75366.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009104751-41164.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009104751-14120.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009104751-85922.png)
(1)求数列
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009104750-75366.png)
(2)设
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009104752-36319.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191009/20191009104752-29275.png)
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