题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011001445-50093.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011001445-44081.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011001445-49097.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011001446-82218.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011001446-24926.png)
(1)求
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011001445-50093.png)
(2)设
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011001446-87432.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011001446-91915.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011001445-44081.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011001447-77723.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011001447-92338.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011001447-78444.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011001447-38100.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011001447-34442.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011001448-49260.png)
(2)
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011001448-93831.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011001448-64074.png)
于是数列
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011001446-91915.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011001448-92826.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011001449-85359.png)
其前
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011001445-44081.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011001459-44765.png)
解析
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011001352-62895.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011001353-51875.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011001353-70739.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011001353-12893.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011001353-89019.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011001353-43403.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011001354-45382.png)
(Ⅱ)等差数列
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011001354-42335.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011001353-51875.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011001354-57045.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011001354-53160.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011001354-62922.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011001355-70069.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011001355-63437.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011001354-57045.png)
(3)若数列
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011001355-59447.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011001355-67766.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011001359-97553.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011001355-59447.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011001353-51875.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011001359-33012.png)
表达式.
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011001207-36324.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011001207-29784.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011001207-88251.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011001130-27223.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011001130-72829.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011001130-48374.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011001131-58945.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011001131-28477.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011001131-15383.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011001131-49566.png)
(Ⅰ)当实数
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011001131-87812.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011001130-27223.png)
(Ⅱ)在(Ⅰ)的结论下,设
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011001142-45347.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011001143-73637.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011001143-74705.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011001130-72829.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011001143-73743.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011001112-39131.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011001113-29617.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191011/20191011001113-33584.png)
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