题目
题型:不详难度:来源:
A.[-,3] | B.[,6] | C.[3,12] | D.[-,12] |
答案
解析
试题分析:
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018045645-18640.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018045645-62458.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018045646-38043.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018045646-18761.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018045646-31624.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018045646-62465.png)
核心考点
试题【已知函数f(x)=x3+2bx2+cx+1有两个极值点x1、x2,且x1∈[-2,-1],x2∈[1,2],则f(-1)的取值范围是 ( )A】;主要考察你对常见函数的导数等知识点的理解。[详细]
举一反三
(1)求常数a的值;(2)若存在x使不等式
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018045639-57161.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018045639-94830.png)
(3)对于函数y=f(x)和y=g(x)公共定义域内的任意实数x0,我们把|f(x0)-g(x0)|的值称为两函数在x0处的偏差.求证:函数y=f(x)和y=g(x)在其公共定义域内的所有偏差都大于2.
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018045629-18115.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018045629-94531.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018045630-58789.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018045630-48602.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018045630-64156.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018045630-50364.png)
A.11 | B.10 | C.9 | D.8 |
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018045611-35103.png)
(Ⅰ)当
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018045612-82539.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018045612-25916.png)
(Ⅱ)当
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018045612-13396.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018045612-18925.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018045613-46358.png)
(Ⅲ)求证:
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018045613-86928.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018045613-53137.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018045555-43051.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018045556-64409.png)
(1)若曲线
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018045556-66486.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018045556-57265.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018045556-21078.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018045557-63054.png)
(2)当
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018045557-79240.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018045557-49340.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018045557-90218.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018045557-70094.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018045558-22879.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018045558-95897.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018045558-91477.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018045542-61960.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018045542-12251.png)
(1)当
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018045543-70494.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018045543-64422.png)
(2)若
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018045543-64422.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018045543-36858.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018045543-95251.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018045543-66094.png)
(3)若
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018045544-81533.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018045544-16720.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018045543-66094.png)
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