题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012003420-76507.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012003421-51222.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012003420-76507.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012003421-40687.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012003421-37657.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012003421-30330.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012003420-76507.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012003421-37657.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012003422-34316.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012003422-91554.png)
⑴若
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012003422-23563.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012003422-40401.png)
⑵若
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012003423-40170.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012003423-11110.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012003420-76507.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012003423-74939.png)
解析
试题分析:⑴因为
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012003421-40687.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012003423-81427.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012003423-40227.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012003420-76507.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012003424-66488.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012003422-40401.png)
(Ⅱ)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012003423-11110.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012003424-76650.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012003424-72296.png)
又因为
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012003421-40687.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012003424-38231.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012003425-31914.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012003436-80011.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012003436-73731.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012003436-81998.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012003423-40170.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012003436-15248.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012003436-81998.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012003436-73731.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012003436-81998.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012003436-81998.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012003436-81998.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012003423-74939.png)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012003359-65141.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012003410-53814.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012003411-67708.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012003411-70203.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012003411-89966.png)
(1)求数列
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012003359-65141.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012003412-18452.png)
(2)设
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012003412-24437.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012003412-59373.png)
(3)对(2)问中的
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012003412-36738.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012003412-30521.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012003413-32587.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012003413-29759.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012003351-22941.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012003352-92552.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012003352-76815.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012003352-60479.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012003352-32165.png)
A.![]() | B.![]() |
C.![]() | D.![]() ![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012003333-96179.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012003333-14219.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012003333-44823.png)
(Ⅰ)求数列
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012003333-22724.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012003334-25303.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012003334-62518.png)
(2)设
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012003334-42363.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012003334-74637.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012003334-67004.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012003335-57658.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012003335-55770.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012003335-42664.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012003335-95692.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012003322-71456.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012003322-56673.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191012/20191012003322-66764.png)
A.9 | B.18 | C.36 | D.72 |
A.3 | B.6 | C.9 | D.36 |
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