题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204193602-65438.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204193602-37017.png)
A.-8 | B.-3 | C.3 | D.8 |
答案
解析
试题分析:因为,函数
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204193602-65438.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204193602-12431.png)
点评:简单题,注意到本题中
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204193602-31434.png)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204193512-23769.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204193513-30116.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204193513-22603.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204193513-89314.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204193513-22603.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204193514-41565.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204193512-23769.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204193512-23769.png)
A.![]() ![]() |
B.![]() |
C.![]() ![]() ![]() |
D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204193441-49391.png)
(Ⅰ)当
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204193442-62714.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204193442-62883.png)
(Ⅱ)当
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204193442-50366.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204193442-62883.png)
(Ⅲ)若对任意
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204193442-72717.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204193444-71379.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204193444-86212.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204193444-92198.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204193435-73083.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204193436-80337.png)
A.![]() ![]() |
B.![]() ![]() |
C.![]() ![]() |
D.![]() ![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204193426-24378.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204193426-33633.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204193426-39113.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204193427-22284.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204193427-72822.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204193427-81634.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204193427-81634.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204193427-35305.png)
①
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204193428-35012.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204193428-60180.png)
②
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204193428-35012.png)
③
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204193428-59699.png)
④
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204193428-25956.png)
其中正确的说法个数为:
A.0 | B.1 | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204193355-99894.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204193356-65450.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204193356-98928.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204193356-82242.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204193356-98543.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204193357-41249.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204193357-89389.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204193357-67486.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204193357-80008.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204193358-19542.png)
(1)求
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204193358-70515.png)
(2)用n表示
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204193358-57462.png)
(3)设
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204193359-91398.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204193359-63718.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204193359-35862.png)
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