中学生网络课堂

首页初一初二初三中考高一高二

高二数学 (人教版)

第一章导数及应用

导数与函数

原函数图像与导函数图像的关系00:14:55

构造函数、巧用导数解不等式00:12:38

利用导数求参数的取值范围00:09:14

用导数求单调区间00:14:13

导数与数学思想00:11:57

用导数证明不等式00:08:50

用导数处理函数的最值00:18:54

用最值研究恒成立问题00:14:42

利用导数求函数的极值、最值00:16:16

10.

导数与极值00:14:29

11.

用导数求函数在闭区间上的最值（必考）00:14:01

12.

导数、零点、方程的根三者之间的关系00:13:26

13.

利用导数判断三次方程根的个数00:10:06

14.

利用导数判断三角函数零点个数00:09:36

本课配套习题挑战模式1/3

返回课程

单选题

难度系数：

1.设函数

在R上可导，其导函数为

，且函数

的图像如图所示，则下列结论中一定成立的是（）

A: 函数有极大值和极小值

B: 函数有极大值和极小值

C: 函数有极大值和极小值

D: 函数有极大值和极小值

提示1：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
提示2：IOWHveaVsGbvvIh477yJ5pyJ5p6B5aSn5YC8Zu+8iC0y77yJLiDlj4jlvZMtMu+8nHjvvJwy5pe277yMPGltZyB3aWR0aD01OCBoZWlnaHQ9MjEgc3JjPSJodHRwczovL3AxLnFpbmdndW8uY29tL0cxL00wMC9EMC9FOS9yQkFDRTFOSHZ1WFRHR2ZTQUFBQjNSS1hYMW8yNjMucG5nIj7vvIzlvZN477yeMuaXtu+8jDxpbWcgd2lkdGg9NTggaGVpZ2h0PTIxIHNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvRDAvRTkvckJBQ0UxTkh2dVdTeXhDV0FBQUIxMHV1X0pBMDQ2LnBuZyI+77yM5pWF5Ye95pWwZu+8iHjvvInmnInmnoHlsI/lgLxm77yIMu+8iQ==
答案：Qg==
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