函数
有三个零点,则
的取值范围为_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4542dfeed61098dd2fe65180c8b9a2a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
20-21高二下·陕西商洛·阶段练习 查看更多[3]
陕西省商洛市洛南中学2020-2021学年高二下学期第一次月考理科数学试题(已下线)第5章 导数及其应用(基础卷)-2021-2022学年高二数学新教材单元双测卷(苏教版2019选择性必修第一册)江西省萍乡市第二中学2021-2022学年高二下学期第一次质量检测数学(理)试题
更新时间:2021-09-13 23:39:25
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【推荐1】已知函数
.
(1)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad69e072416bd6c6118f619a5d102964.png)
________ ;
(2)若函数
在(
,10)上有8个零点
(i=1,2,3,…,8),则
的取值范围为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06a9555033580aeaebcfcee5ec86cd96.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad69e072416bd6c6118f619a5d102964.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f29a4bca0bd9f42360f0ba8e97c4d1ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6dcba010071423f966e65cafc5c374ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97ea8f47d8d8d9e1832d52b1c7425450.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8a6dc2dd9e1aef5414722db5adf64cb.png)
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【推荐2】给出以下四个结论:
①函数
的对称中心是
;
②若关于
的方程
在
没有实数根,则
的取值范围是
;
③在
中,“
”是“
为等边三角形”的充分不必要条件;
④若
的图象向右平移
个单位后为奇函数,则
最小值是
.
其中正确的结论是______
①函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe4faabaa0577a73c87bc1aa1fc48c19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82dab5b50b2ba09b384a3ee2a8860263.png)
②若关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77d7abb827b33a50040b4cd853660846.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ac2dec993e1dcd5d8a848298ba0080.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c972cbd63decec197aec1bdc306de67.png)
③在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abce03491b0d681cfc2db3a4fa57fb26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
④若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/273f20827865748cd3a334158cb4bd59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a13dc7f8362a372a773dafe96197d6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6581916f5a65edfea257c804efee007e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5aeb076bad84890e24dbdc945ad543cb.png)
其中正确的结论是
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【推荐3】已知函数
,其中常数
.若
在
上单调递增,则
的取值范围是______ ;若
,将函数
的图象向左平移
个单位长度,再向上平移1个单位长度,得到函数
的图象,区间
(
,
且
)满足:
在
上至少含有30个零点,则在所有满足上述条件的
中,
的最小值是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cd948585474237aa7f9b7361bee6d81.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6a46e678bf9d2df5ad4c782b3dc22f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1938c093dd2fbcb752d0eb7a18d143b2.png)
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解题方法
【推荐1】已知
,
,则函数
的零点个数为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f52ce8cf72216ea15e51aeedd2ae430.png)
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【推荐2】已知函数
有两个零点,则
的最小整数值为______ .
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您最近一年使用:0次