题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019020800-40797.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019020800-59981.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019020800-77832.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019020800-59981.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019020800-40797.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019020800-59981.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019020800-17014.jpg)
A.1 | B.2 | C.3 | D.4 |
答案
解析
试题分析:根据极大值的概念知:导函数先正后负的零点是极大值点,由图知
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019020800-61929.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019020800-40797.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019020800-59981.png)
点评:当函数
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019020801-94182.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019020801-23903.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019020801-23903.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019020801-97530.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019020801-97530.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019020801-86352.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019020801-23903.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019020801-97530.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019020801-97530.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019020801-86352.png)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019020752-20547.png)
A.极小值-1,极大值1 | B.极小值-2,极大值3 |
C.极小值-1,极大值3 | D.极小值-2,极大值2 |
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019020740-39135.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019020740-57750.png)
(1)讨论函数
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019020740-42678.png)
(2)若函数
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019020740-42678.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019020740-20281.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019020740-66007.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019020741-10305.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019020741-54442.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019020741-69541.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019020729-96610.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019020729-37012.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019020729-69845.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019020720-32034.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019020720-91409.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019020720-95207.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019020720-60698.png)
(1)求函数
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019020720-91409.png)
(2)设函数
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019020720-34357.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019020720-59092.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019020721-28644.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019020721-69898.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019020720-59092.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019020714-45492.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019020714-63811.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019020714-69824.png)
求
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019020714-14822.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019020714-17972.png)
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