题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018035539-95981.png)
(1)当
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018035539-41961.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018035539-12587.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018035540-50357.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018035539-12587.png)
(3)若对任意的
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018035540-56771.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018035540-64803.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018035540-51259.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018035540-79256.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018035541-72776.png)
解析
试题分析:(1)当
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018035541-29398.png)
(2)当
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018035541-96355.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018035541-53715.png)
(3)由对任意的
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018035540-56771.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018035540-64803.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018035542-52207.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018035542-65913.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018035542-52207.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018035542-80670.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018035542-38313.png)
试题解析:(1)当
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018035539-41961.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018035542-38280.png)
由
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018035543-23768.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018035543-93018.png)
∴
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018035539-12587.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018035543-95414.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018035543-42806.png)
∴
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018035539-12587.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018035543-89606.png)
(2)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018035544-37642.png)
①当
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018035544-95672.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018035539-12587.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018035543-95414.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018035544-69022.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018035544-35219.png)
②当
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018035545-52191.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018035539-12587.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018035545-54327.png)
③当
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018035545-67898.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018035539-12587.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018035543-42806.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018035545-18223.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018035545-17242.png)
(3)当
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018035546-63880.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018035539-12587.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018035546-50184.png)
∴
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018035546-19829.png)
由
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018035546-14237.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018035547-96955.png)
∴
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018035547-74632.png)
即
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018035547-55497.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018035546-63880.png)
即
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018035547-76212.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018035546-63880.png)
由于当
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018035546-63880.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018035547-47408.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018035541-72776.png)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018035533-29366.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018035533-45643.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018035533-13214.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018035533-50715.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018035533-46590.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018035534-67410.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018035534-62389.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018035534-46610.png)
A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018035524-78607.png)
(1)若
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018035524-92322.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018035525-62174.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018035525-35674.png)
(2)若
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018035525-79900.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018035525-37874.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018035526-13290.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018035526-12794.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018035503-93218.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018035503-53459.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018035503-31937.png)
(1)求一阶函数
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018035504-22151.png)
(2)讨论方程
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018035504-73724.png)
(3)求证:
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018035504-97588.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018035455-87348.png)
(Ⅰ)求
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018035455-87340.png)
(Ⅱ)若
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018035455-87340.png)
(Ⅲ)若
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018035455-70735.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018035455-87340.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018035446-66218.png)
①
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018035447-75623.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018035447-75018.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018035447-90726.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018035447-20241.png)
其中正确结论的序号为( )
A.①③ | B.①④ | C.②④ | D.②③ |
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