名校
1 . 已知函数
(
且
)有两个不同的零点,则实数a的取值范围是( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c56e32808e55b4ca5ecfee60b773965d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c400a615a16a1662de98dfb4e49d58d3.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2022-02-21更新
|
1413次组卷
|
7卷引用:江西省九江市2022届高三第一次高考模拟统一考试数学(理)试题
江西省九江市2022届高三第一次高考模拟统一考试数学(理)试题(已下线)技巧05 第二篇 解题技巧(测试卷)--第二篇 解题技巧篇-《2022年高考数学二轮复习讲练测(新高考·全国卷)》(已下线)专题06 导数概念与几何意义-2022届高考数学一模试题分类汇编(新高考卷)海南省海南华侨中学2022届高三下学期第五次模拟数学试题四川省遂宁市绿然国际学校2022届高考数学(文科)二诊模拟试题(已下线)微考点2-1 新高考新试卷结构中导数中零点根的个数问题(2大题型)(已下线)专题6 函数的零点问题【讲】(压轴题大全)
2 . 已知函数
.
(1)求曲线
在
处的切线方程;
(2)若
,求证:在区间
内有且仅有一个实数
,使得
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c83ba6c2b77e8985cd5ba45ead3e1f4b.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b80d792456f58cf9fc8671d215659f6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f803a468e5d66004e57372a5bf2c5e1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/388e58a3387b6f542a839970fb26395f.png)
您最近一年使用:0次
3 . 已知函数
.
(1)当
时,求证:
;
(2)若
有两个零点,求k的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683b75c1bab8ee6115d8762f414b6d55.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce96c3b049f0b21694662e2a43c10cab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b666663ce3537a634a3b427b418eb62.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
您最近一年使用:0次
4 . 已知函数
.
(1)求函数
在
处切线的斜率;
(2)求证:
有且只有一个零点
,且满足
.
参考数据:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/793fa07cabf3f0fba565a138627c0033.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68c6b6a11760d0724b0b60e55970e229.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5217d73e702956a4401ae1df29f6dcfa.png)
参考数据:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35b7cfcc147916ae7eeb5d557fea945e.png)
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解题方法
5 . 设函数
的零点为
,
的零点为
,其中
,
均大于零.
(1)若
,求实数
的取值范围;
(2)当
时,求证:
.
参考数据:
,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22b6ce950aae81b65fefbf52e621e612.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cefb1504c28e15244141df8c33d754b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5d01c545537e6330e36a618706d7b92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/500d68f2678989a5ce7431cfd51b019d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d587307ac3fc84f0f7a2c9ea693219df.png)
参考数据:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35b7cfcc147916ae7eeb5d557fea945e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7739fabf233e5b2136faf751a7ebc02.png)
您最近一年使用:0次
2022-02-15更新
|
591次组卷
|
2卷引用:江西省景德镇市2022届高三第二次质检数学(理)试题
名校
解题方法
6 . 若存在两个不相等的正实数x,y,使得
成立,则实数m的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1de2aad0db25a2a8080eb9e2bc3bad58.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2022-01-24更新
|
1489次组卷
|
5卷引用:江西省鹰潭市2021-2022学年高二上学期期末数学(文)试题
江西省鹰潭市2021-2022学年高二上学期期末数学(文)试题江苏省苏南三校2022届高三下学期2月阶段调研数学试题江苏省南京市第五高级中学2022届高三下学期一模数学试题(已下线)二轮拔高卷05-【赢在高考·黄金20卷】备战2022年高考数学(文)模拟卷(全国卷专用)河南省河南大学附属中学2021-2022学年高二下学期6月月考数学(理)试题
7 . 已知函数
.
(1)当
时,求证:
;
(2)若
是
唯一的零点,求
的单调区间.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70303c6ad15636a1b0947c522e2cf605.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22e38c541dec8fce1d26886e5ef7d21f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
您最近一年使用:0次
名校
解题方法
8 . 若关于
的不等式
恒成立,则正数
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/802e8f7d3bdb4a345bde06a924d92127.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2021-12-24更新
|
1030次组卷
|
3卷引用:江西省丰城市第九中学2021-2022学年高二上学期期末数学(文)试题
9 . 已知函数
,
.
(1)讨论
在
内的零点个数.
(2)若存在
,使得
成立,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/899c0b410483281b0530dbaf54562f77.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eba162d762bf286b2c65ede8507ffbb6.png)
(1)讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45e601d5f49a28dd69ed4e6fa1bab251.png)
(2)若存在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a90f71a22daa4df7bd75c1e3e66fcb4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e653994b245fbdc2ac3458429c65e69e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9cf65a8ab3a0ccef318e71db5b793940.png)
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2021-11-03更新
|
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2卷引用:江西省宜春中学、高安中学、上高二中、萍乡中学2023届高三11月份第一次优生联考数学(理)试题
10 . 已知函数
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26bc8a3c855a8c71169a261c0a81cbc1.png)
.
(1)当
时,试判断函数
的单调性;
(2)记
,若函数
在
上没有零点,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdac8719fed9bb4e1753587608265d50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26bc8a3c855a8c71169a261c0a81cbc1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e5ff2705eb737adef9a6dc70559d79.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa4c355f11471a38f5583a434a1ddeb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4633de9335d15d7685bdecb007a3678c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46be55c8f2760d6db125f46691a3de48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9ecf742f2e1cb56be9c88dc601a3f37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2021-10-06更新
|
500次组卷
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