1 . 已知函数
.
(1)若
,求函数
的极值;
(2)当
时,判断函数
在区间
上零点的个数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc1aadec205db39169fdc6ec8c764ac7.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d33da711e50e96568facb18cef27165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7326ea56be82bd616fec7e6aa3c884c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb87c830a03204a5b783ad4c2ba49c4e.png)
您最近一年使用:0次
2017-11-20更新
|
1458次组卷
|
5卷引用:湖北省咸宁市2018-2019学年高二下学期期末数学试题
湖北省咸宁市2018-2019学年高二下学期期末数学试题江苏省无锡市立人高级中学2020-2021学年高二下学期期中数学试题山东省德州市2018届高三上学期期中考试数学(理)试题安徽省合肥市肥东县高级中学2019-2020学年高三1月调研考试数学(理)试题(已下线)专题36 盘点导数与函数零点的交汇问题—备战2022年高考数学二轮复习常考点专题突破
名校
2 . 已知函数
的零点在区间
内,则![](https://img.xkw.com/dksih/QBM/2017/4/21/1670567073480704/1694457704071168/STEM/263fc3d45ee64cea86a5dd0746f547da.png?resizew=25)
_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c60d6ca3f2e26f0e0f937e4abdc600b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27efb834b0d1dabb329746426f81ccc6.png)
![](https://img.xkw.com/dksih/QBM/2017/4/21/1670567073480704/1694457704071168/STEM/263fc3d45ee64cea86a5dd0746f547da.png?resizew=25)
您最近一年使用:0次
2017-05-25更新
|
2390次组卷
|
3卷引用:江苏省沭阳县2016-2017学年高二下学期期中调研测试数学试题
江苏省沭阳县2016-2017学年高二下学期期中调研测试数学试题(已下线)考点12 零点定理(讲解)-2021年高考数学复习一轮复习笔记江苏省宿迁市泗阳县实验高级中学2022-2023学年高一下学期第一次质量调研数学试题
3 . 下列说法:
①函数
的零点只有1个且属于区间
;
②若关于
的不等式
恒成立,则
;
③函数
的图象与函数
的图象有3个不同的交点;
④已知函数
为奇函数,则实数
的值为1.
正确的有_________ .(请将你认为正确的说法的序号都写上)
①函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/885fa1cf6982c3be9502b5430c4f0b1c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25f114df5ceabdb7e5fd3fdad4eaf056.png)
②若关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/008d24253863cb430a7ca55f620faaa7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e436ea3ddcd13e69171135f0ff8e934a.png)
③函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d77f5191798242b7b9b88a75e17e4425.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2b9643da0c0fea4f099f9a9133d6076.png)
④已知函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35a85490eb04ae715ddb51e81b6048d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
正确的有
您最近一年使用:0次
2016-12-03更新
|
230次组卷
|
2卷引用:2015-2016学年江苏启东中学高二上学期期中理科数学试卷
12-13高二下·江苏淮安·期中
解题方法
4 . 已知二次函数
.
(1)若
,试判断函数
零点个数;
(2)是否存在
,使
同时满足以下条件:
②对任意
,都有
,若存在,求出
的值,若不存在,请说明理由;
(3)若对任意
且
,
,试证明存在
,使
成立.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/331d5e308cd5469e0f28a8d75f79903f.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a431537df789febf4bc45e3dc23cefaf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)是否存在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3eb9b6fe8959ae9e71e857b6d6fed49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
①对任意,且
;
②对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb63478132d4c1fef3c17e591919da83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dab53f08a33f751167bfd382ce0ba8ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
(3)若对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee0258bd6d073c7ab70da6cac2c75954.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26d8dafc71b106f39f4e15442220897b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f27822887caad20f3a075ca2fb74155c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d701701514d29d22d56e8a35f797d267.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86809499022d70bcc3e6b436116b3abb.png)
您最近一年使用:0次
12-13高一上·江苏南通·期末
解题方法
5 . 函数
的零点所在区间为
,
则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f3cb8d72bb2e281b943b3b430138ef7.png)
______ .
![](https://img.xkw.com/dksih/QBM/2012/2/1/1570708370145280/1570708375379968/STEM/5592021332c142a0be033c2324c76a46.png?resizew=90)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89692342250b56a41d7cdec79a608d5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f02d5c8eec434a3f90348d770a2e2b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f3cb8d72bb2e281b943b3b430138ef7.png)
您最近一年使用:0次