题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231844-27062.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231844-51954.gif)
(1)判断
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231844-36768.gif)
(2)判断
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231844-36768.gif)
(3)当
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231844-36768.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231845-23180.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231845-64891.gif)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231845-76990.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231845-41009.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231846-67962.gif)
解析
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231846-72421.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231846-12532.gif)
∴
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231846-93354.gif)
∴
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231845-76990.gif)
(2)设
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231846-95463.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231847-12786.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231847-66641.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231847-47401.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231847-70794.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231848-71782.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231848-85438.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231848-70223.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231848-46766.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231848-52568.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231849-95804.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231847-70794.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231849-72991.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231849-79241.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231849-54340.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231848-46766.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231848-52568.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231849-95804.gif)
∴
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231845-41009.gif)
(3)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231850-45579.gif)
∴
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231850-84091.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231846-72421.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231845-76990.gif)
∴
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231850-84546.gif)
即
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231850-63807.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231851-41673.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231844-36768.gif)
∴
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231851-31045.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231851-80870.gif)
∴不等式的解集为
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231846-67962.gif)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231839-21873.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231839-17935.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231839-46695.gif)
A.—2 | B.2 | C.1 | D.以上都不对 |
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231827-78210.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231827-64803.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231827-41013.gif)
(1)用关于a的代数式分别表示b和c;
(2)当
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231827-52613.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231827-41013.gif)
(3)求
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231828-61674.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231817-92257.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231818-37627.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231818-63022.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231818-54944.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231818-58302.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231808-95023.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231800-87356.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231800-69475.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191017/20191017231801-80605.gif)
A.![]() | B.![]() | C.![]() | D.![]() |
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