题目
题型:单选题难度:一般来源:不详
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065426-12297.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065426-34491.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065427-88190.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065427-95006.gif)
(1)求
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065426-12297.gif)
(2)若曲线
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065427-34189.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065427-70962.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065427-22235.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065428-24149.gif)
(3)求函数
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065428-57960.gif)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065428-11815.gif)
(2)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065428-67588.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065428-18625.gif)
(3)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065429-20662.gif)
解析
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065429-13311.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065429-72188.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065429-79718.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065429-46571.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065426-34491.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065430-95655.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065430-23737.gif)
因为在点
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065430-27640.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065427-95006.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065430-39344.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065430-81204.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065431-44635.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065428-11815.gif)
(2)设
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065431-44773.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065431-39062.gif)
当
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065431-64495.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065431-59508.gif)
当
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065432-42755.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065432-96026.gif)
所以,曲线
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065432-47296.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065432-62862.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065432-98324.gif)
解不等式
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065433-71787.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065433-51053.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065428-67588.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065428-18625.gif)
(3)设
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065433-93330.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065433-95977.gif)
当
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065433-22016.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065434-15566.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065434-20126.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065434-69976.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065434-17382.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065434-77714.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065435-78601.gif)
核心考点
试题【已知二次函数满足:①若时有极值;②图像过点,且在该点处的切线与直线平行.(1)求的解析式;(2)若曲线上任意一点的切线斜率恒大于,求的取值范围;(3)求函数的值】;主要考察你对一次函数的图象和性质等知识点的理解。[详细]
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065424-95027.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065424-50943.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065424-31234.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065425-76445.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065425-12773.gif)
A
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065425-51815.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065425-35716.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065425-60673.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065426-59829.gif)
已知函数
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065421-60741.gif)
(1)当
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065421-95360.gif)
(2)求实数
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065421-95176.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065421-55430.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065422-68634.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065420-50215.gif)
A.充分不必要条件 | B.必要不充分条件 |
C.充要条件 | D.既不充分又不必要条件 |
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065415-73210.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065415-89607.gif)
(1)求
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065415-73210.gif)
(2)在区间[-1,1]上,y=
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065415-73210.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065416-95686.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065413-50253.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819065414-36477.gif)
A.![]() | B.![]() | C.![]() | D.![]() |
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