题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017125620-56610.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017125620-63032.png)
A.![]() | B.![]() | C.![]() | D.![]() |
答案
解析
试题分析:函数
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017125621-90744.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017125621-90065.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017125622-22385.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017125622-32729.png)
所以
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017125622-17362.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017125620-44824.png)
本题属于容易题,但还是会出现以下错误:(1)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017125622-52331.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017125620-63032.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017125622-32729.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017125622-58559.png)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017125611-71837.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017125606-70815.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017125606-17484.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017125606-15368.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017125607-76026.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017125606-17484.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017125606-15368.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017125607-38939.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017125606-15368.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017125606-15368.png)
A.四个 | B.两个 | C.一个 | D.零个 |
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017125554-73481.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017125554-65192.png)
(Ⅰ)当
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017125554-79859.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017125555-39093.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017125555-63937.png)
(Ⅱ)若
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017125555-39093.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017125555-49242.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017125555-39093.png)
(Ⅲ)是否存在实数
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017125555-76959.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017125555-39093.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017125555-17553.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017125555-76959.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017125533-58638.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017125533-21326.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017125533-22608.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017125534-13674.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017125534-82440.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017125534-88172.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017125534-73156.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017125535-61035.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017125535-16354.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017125535-31062.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017125535-80286.png)
(1)设
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017125536-24566.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017125533-21326.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017125536-82834.png)
(2)若
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017125536-31586.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017125536-44115.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017125536-88796.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017125533-21326.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017125523-20251.png)
A.1 | B.2 | C.![]() | D.![]() |
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