题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015031910-75518.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015031910-32865.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015031910-97981.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015031911-10497.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015031910-75518.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015031911-15588.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015031911-73641.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015031911-11697.png)
答案
解析
试题分析:由已知得
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015031912-51348.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015031912-33080.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015031912-64688.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015031911-15588.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015031912-81498.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015031911-15588.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015031912-10511.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015031911-15588.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015031913-40494.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015031913-31386.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015031912-64688.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015031911-15588.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015031913-77231.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015031913-15687.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015031914-20430.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015031914-35963.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015031914-78988.png)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015031857-99172.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015031857-76446.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015031857-67156.png)
A.150 | B.-200 | C.150或-200 | D.-50或400 |
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015031848-55872.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015031848-53209.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015031848-40371.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015031825-48256.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015031825-76472.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015031825-48713.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015031825-16694.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015031809-17052.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015031809-85526.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015031809-14216.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015031809-36809.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015031809-83528.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015031810-75248.png)
(1)求
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015031810-75650.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015031810-11662.png)
(2)若数列
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015031810-54702.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015031811-38057.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015031810-54702.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015031809-85526.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015031811-45500.png)
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