名校
1 . 已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f4f612151a26c9acb757b8699615ccc.png)
(1)若
,求证:函数
恰有一个正零点;(用图像法证明不给分)
(2)若函数
恰有三个零点,求实数
取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f4f612151a26c9acb757b8699615ccc.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd876a2ed79c64bacc3e64b8ee92735e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bca4be345087f993a4078e16c16608e2.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c809db63ee557931ff0469467b323623.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
2020-11-24更新
|
1248次组卷
|
6卷引用:河南省南阳市第一中学校2021-2022学年高一上学期第四次月考数学试题
河南省南阳市第一中学校2021-2022学年高一上学期第四次月考数学试题山西省大同市第一中学2021-2022学年高一上学期12 月学情检测数学试题广东省深圳市2019-2020学年高一上学期期末数学试题(已下线)卷12 指数函数与对数函数 章末复习单元检测(难)-2021-2022学年高一数学单元卷模拟(易中难)(2019人教A版必修第一册)(已下线)专题6.2 方程的根与函数零点 B卷-2021-2022学年高一数学单元卷模拟(易中难)(2019人教A版必修第一册)(已下线)专题6.2函数零点与方程根的分布 B卷-2021-2022学年高一数学单元卷模拟(易中难)(人教A版2019必修第一册)
2 . 已知函数
,
.
(1)若
,求证:函数
恰有一个负零点;(用图象法证明不给分)
(2)若函数
恰有三个零点,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f3638497287cc083c36e43d2b6dadd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0be94f180326e59227954582541ffbe.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd876a2ed79c64bacc3e64b8ee92735e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cffa662f0273f0921c1fa4727f632395.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad013a5114a39844e492f807246dc56a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
2020-02-23更新
|
179次组卷
|
2卷引用:湖南省五市十校2019-2020学年高一上学期第一次联考数学试题B卷
名校
3 . 已知
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1502aca15b810e295c2841f829c0b41c.png)
(1)若
,求证:函数
恰有一个负零点.(用图像证明不给分)
(2)若函数
恰有三个零点,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f05684f6c0813df9531a9654c6c8c78.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1502aca15b810e295c2841f829c0b41c.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd876a2ed79c64bacc3e64b8ee92735e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97dd49ae1e7ac427c0a42525dd7d38b3.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f49ad7e05f8fada803d5713257d0828.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
4 . 已知函数f(x)=ax2+bx+c,满足f(1)=﹣
,且3a>2c>2b.
(1)求证:a>0时,
的取值范围;
(2)证明函数f(x)在区间(0,2)内至少有一个零点;
(3)设x1,x2是函数f(x)的两个零点,求|x1﹣x2|的取值范围.
![](https://img.xkw.com/dksih/QBM/2016/2/25/1572499519602688/1572499525263360/STEM/5a6a3fa3186f4c6ba505479aba7bd74b.png)
(1)求证:a>0时,
![](https://img.xkw.com/dksih/QBM/2016/2/25/1572499519602688/1572499525263360/STEM/eb7c214e6c194b48986eba5c20d294d0.png)
(2)证明函数f(x)在区间(0,2)内至少有一个零点;
(3)设x1,x2是函数f(x)的两个零点,求|x1﹣x2|的取值范围.
您最近一年使用:0次
名校
5 . 若函数
有
个零点,且从小到大排列依次为
,定义
如下:
.已知函数
(其中
为实数).
(1)设
是
的导函数,试比较
和
的大小;
(2)若
,求
的取值范围;
(3)对任意正实数
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fe1c31a81f198c443e71b83ca662939.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28ae738aa8389e3b7902ea5055a4f279.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8e73582d71d8dafbe53f55bbde3c99f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/926a1586c9457dd1996157096eb23f57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/301bbd5742966ec13edf24d7a3b150e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bde66f0ef8ea3ac6d6ac91a93ba69ae5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21ac79984ad2022bf411890562910d3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034f4c179b838bf595faede7eafb86e4.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a33d620bf581ebbe4c9fea0ee549fc7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)对任意正实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/793927fab6e6256ea2eeb70334a9db31.png)
您最近一年使用:0次
6 . 已知函数
.
(1)当
时,求函数
的最大值
(2)若函数
有两个不同零点,求实数
的取值范围
(3)设
,数列
的前
项和为
.证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22402c92b6520102d426be0426dd2682.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/448e12651d90029beeeedfa4dba2a519.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6ac599022bc660692040ae16fc548f2.png)
您最近一年使用:0次
名校
7 . 设函数
与
的定义域为
与
分别为函数
与
的导函数,若存在
,满足
且
,则称函数
与
为“优美函数”.已知函数
与
.
(1)已知
和
,求证:
和
;
(2)当
时,若函数
与
为“优美函数”,求
的取值范围;
(3)当
时,已知函数
与
为“优美函数”,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6085b118b86f7f4dd54864e113cd595c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6cc4a85bbf152031dc8ebd182e44ead.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5685f66553971f62cb1d8cee9a49244.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f59ef75c0e906e108cad5f4d34ae21ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6085b118b86f7f4dd54864e113cd595c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6cc4a85bbf152031dc8ebd182e44ead.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3102c0a2f53b80f9dddbf9352537e8d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59a4a84e03dab8e8aa04f597b4fcf998.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c668385fc2475e2600074c350d961a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6085b118b86f7f4dd54864e113cd595c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6cc4a85bbf152031dc8ebd182e44ead.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81d6c95ea3b9d0ff3e90a702d2db77d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7024f7708dcc7deba3b8baa1afe6b40a.png)
(1)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/155672d8c17847792e73c07cb94fcff3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7300497edb92cd1fedd641dd1c5a364.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6694d977c5ac4d7b5342d18728f4c489.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d7e549248d2c6d1c8706ec49f19a59b.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a3c442579603164f3fc19458677d307.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d33da711e50e96568facb18cef27165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d4acc891e024b77f174039085580e48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83dcde657544ded718d8b7b0ff0537a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb7139148f3c934fdf505f2f020f023d.png)
您最近一年使用:0次
8 . 已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbef08291a4b85fee7eb92583af9d94e.png)
.
(1)若
有且仅有一个零点,求实数
的取值范围;
(2)若
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbef08291a4b85fee7eb92583af9d94e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e5ff2705eb737adef9a6dc70559d79.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/811d01cd3d16897d0309d278bf04d613.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7afa854f67f5d686693d2710d41f714.png)
您最近一年使用:0次
名校
9 . 已知函数
.
(1)当
时,求证:
在
上是增函数;
(2)若
在区间
上存在最小值,求
的取值范围;
(3)若
仅在两点处的切线的斜率为1,请直接写出
的取值范围.(结论不要求证明)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/491cc9e91e8b287c71b44f0facf88d51.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/870ebc2f7aabb028024894568d749934.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2024-02-04更新
|
618次组卷
|
3卷引用:重庆市垫江第二中学2023-2024学年高二下学期第一次月考数学试题
名校
10 . 已知函数
.
(1)当
时,若函数
恰有一个零点,求实数
的取值范围;
(2)设函数
,
,对于曲线
上的两个不同的点
,
,记直线
的斜率为
,若函数
的导函数为
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5b97c271bf31f8c2cc629b2e5b4b2cd.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20849c00c47cbdc43f18d53341b6c4e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b426608a06477f57cb994f4d00e4465d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8e098234443426e44fd75db05741280.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10bbdef421c976962a270a2beabbad91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12888d27c7d8c24b783d508781c270b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9b1c93f63373ab21b6bf4c854c2660e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/724340d69477c0ec2418c392b22b1cab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e127eacc3365b00523107b65cde882ff.png)
您最近一年使用:0次