题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018022913-86493.png)
(1)若函数
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018022913-71590.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018022913-88268.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018022914-70372.png)
(2)若对任意的
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018022914-17264.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018022914-96217.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018022914-61997.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018022915-31088.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018022915-18245.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018022915-68027.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018022915-12788.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018022915-24921.png)
解析
试题分析:(1)要使函数f(x)在x∈[-1,1]内没有极值点,只需f′(x)=0在[-1,1]上没有实根即可,即f′(x)=0的两根x=-a或x=
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018022916-93169.png)
解:(1)由题意知,
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018022916-86907.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018022915-12788.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018022916-60003.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018022916-68850.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018022917-60702.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018022915-18245.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018022915-68027.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018022915-18245.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018022915-68027.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018022915-12788.png)
(2)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018022917-88379.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018022917-69410.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018022913-71590.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018022917-41131.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018022918-56770.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018022914-17264.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018022918-84906.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018022918-59477.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018022918-82082.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018022919-73283.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018022914-96217.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018022914-61997.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018022919-90443.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018022919-64008.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018022914-17264.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018022915-24921.png)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018022905-39778.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018022905-65740.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018022905-28806.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018022905-59520.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018022905-86060.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018022905-86060.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018022905-10678.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018022905-25616.png)
A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018022858-77645.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018022859-41647.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018022859-26644.png)
A.-3或4 | B.4 | C.-3 | D.3或 4 |
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018022854-61688.png)
A.![]() | B.![]() |
C.![]() | D.与x的取值有关 |
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018022835-89214.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018022836-33037.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018022836-15892.png)
(Ⅰ)当
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018022836-43421.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018022836-69741.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018022837-68486.png)
(Ⅱ)求函数
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018022837-67739.png)
(Ⅲ)当
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018022837-40364.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018022837-67739.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018022837-64780.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018022837-21760.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018022825-89786.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018022826-36692.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018022826-28938.png)
且在点
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018022826-50258.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018022826-15809.png)
(1)求
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018022826-15839.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018022826-12137.png)
(2)若存在实数
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018022826-59027.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018022826-68217.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018022827-33469.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018022826-59027.png)
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