题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143804-75970.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143804-69780.gif)
(1)、若函数
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143804-49083.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143804-68458.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143805-55835.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143805-38783.gif)
(2)、若函数
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143804-49083.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143805-57084.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143805-14753.gif)
(3)、讨论方程
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143806-67144.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143806-37090.gif)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143806-87051.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143806-47874.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143804-49083.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143804-68458.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143807-24268.gif)
所以
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143807-79846.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143807-75651.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143807-61204.gif)
(2)若函数
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143804-49083.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143805-57084.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143807-91649.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143805-57084.gif)
即:
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143808-51447.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143805-57084.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143808-17070.gif)
(3)当
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143808-38548.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143804-49083.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143808-68077.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143809-75228.gif)
当
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143809-36979.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143809-58843.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143808-68077.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143804-49083.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143808-68077.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143809-25052.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143810-21095.gif)
当
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143810-68360.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143810-47446.gif)
因为当
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143810-33023.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143811-63097.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143804-49083.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143811-80481.gif)
当
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143811-98993.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143804-49083.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143811-32878.gif)
所以当
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143812-29565.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143812-67452.gif)
当
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143812-78714.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143812-58348.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143813-24536.gif)
当
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143813-83468.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143813-25493.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143812-29565.gif)
当
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143813-51627.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143814-70519.gif)
因为
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143814-63367.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143814-65895.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143814-50365.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143806-37090.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143811-80481.gif)
因为当
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143815-39019.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143815-27099.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143815-42015.gif)
所以
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143815-80466.gif)
因为
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143815-34170.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143816-70563.gif)
所以 方程
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143806-37090.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143811-32878.gif)
所以方程
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143806-37090.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143816-48544.gif)
综上所述:当
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143816-99399.gif)
当
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143816-97543.gif)
当
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143817-97387.gif)
解析
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143809-53634.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143810-72425.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143810-69257.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143810-15573.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143810-46615.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143811-21802.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143811-68049.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143811-39364.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143811-84100.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143719-17916.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143719-26957.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143719-91834.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143720-42709.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143720-70450.gif)
已知函数
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143556-46899.gif)
(1)设
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143556-26630.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143557-68158.gif)
(2)若
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143557-98431.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143557-90765.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143557-49823.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143557-84116.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143558-19516.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143448-80729.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143449-87177.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143449-92794.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143449-37776.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143449-46936.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143450-21803.gif)
设函数
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143419-62867.gif)
(1)若
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143419-43162.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143420-88229.gif)
(2)若
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143420-27187.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143420-64193.gif)
(3)记
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143420-82822.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143420-36397.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143420-23234.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018143421-16806.gif)
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