题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205062358-35731.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205062359-67805.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205062359-88082.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205062359-12585.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205062359-74520.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205062358-35731.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205062359-88082.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205062359-12585.png)
所以
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205062400-10331.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205062359-12585.png)
即
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205062400-12710.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205062359-12585.png)
令
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205062400-30144.png)
① 当
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205062400-65522.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205062401-99523.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205062401-11574.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205062401-39476.png)
② 当
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205062401-34631.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205062402-35363.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205062402-58406.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205062402-35363.png)
③ 当
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205062402-94794.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205062402-25637.png)
综上所述a<1……………12分
解析
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205062335-22872.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205062311-11249.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205062312-38015.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205062312-69306.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205062312-85615.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205062312-76723.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205062313-93779.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205062313-99447.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205062254-65629.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205062254-80844.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205062255-62293.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
已知函数
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205062236-32338.png)
(1) 试说明函数
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205062236-36962.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205062236-47782.png)
(2) (理科)若函数
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205062237-90142.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205062237-46143.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205062237-46143.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205062237-38004.png)
(3) 求函数
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205062237-38728.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205062207-17457.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205062207-48441.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205062207-17457.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205062207-48441.png)
①
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205062208-58605.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205062208-97227.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205062208-79810.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205062208-54546.png)
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