1 . 已知函数
.
(1)讨论函数
的单调性;
(2)试求函数
零点的个数,并证明你的结论.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b940b8906ede5f4392bc19931e8024da.png)
(1)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
(2)试求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
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2 . 已知函数
,
.
(1)讨论函数
在
上的单调性;
(2)若
有唯一零点,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d77ce55f66c784b26ae5f806d50e32e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/599c96746eee25c9b523b65696885687.png)
(1)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebb9b1a345e3913be8753c2f67563c0a.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39415d7c37276ec3b52ebe166e86c285.png)
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3 . 函数
在
内有两个零点,则实数
的取值范围是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95ffd0ced0c800d6b973fa5441444359.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7160d93f92089ef36f3dab809d3114b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
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2020-03-26更新
|
834次组卷
|
3卷引用:2019届浙江省绍兴一中高三下学期5月高考适应性考试数学试题
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4 . 已知数列
满足
,
,其中常数
.
(Ⅰ)若
,求
的取值范围;
(Ⅱ)若
,求证:对于任意的
,均有
;
(Ⅲ)当常数
时,设
,若存在实数
使得
恒成立,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8092e34ff2eae7c8430e4f725c5cb8dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea4ac187cbb465180e89f38250b3970.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74b9d614798b15eb2c8024401b838ba5.png)
(Ⅰ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0d8d0a8b05b649194390123f5f578bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
(Ⅱ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/177d3c95da5b9253ef367d52506240d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea4ac187cbb465180e89f38250b3970.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/302a52418906995053435a17a1d1a99c.png)
(Ⅲ)当常数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6de1d395e6c48c0676a1488a299479d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b196937e9a4f97c05fbefd2e12806693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2abac23845353bd360aa2e5308b4baa0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
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解题方法
5 . 已知正项数列
满足:
.
(Ⅰ)求
的值,并证明:
;
(Ⅱ)设
,证明:
;
(Ⅲ)设数列
的前
项和为
,证明:当
时,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fce9621291e7d3261185766fb187a2c0.png)
(Ⅰ)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1254070260067f8bf2fec39a7d0c8f1.png)
(Ⅱ)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c20644542afc92f39894a2b6f44830c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a73506b20bce6228cef9ce9456782d8e.png)
(Ⅲ)设数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96b250e4276bf3f328b03a66765541f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0704f453b2de48d36911f7db496bbf82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/043ceeaf2eedcb41e28eafff2514a573.png)
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6 . 圆
.
(1)若圆
与
轴相切,求圆
的方程;
(2)已知
,圆
与
轴相交于两点
(点
在点
的左侧).过点
任作一条与
轴不重合的直线与圆
相交于两点
.问:是否存在实数
,使得
?若存在,求出实数
的值,若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/baffee74f1aebae897c4ac6abe8e6916.png)
(1)若圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d33da711e50e96568facb18cef27165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bc12c55f2676aeb4f696f4a84e4d65b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d5ce23462dfd28929430b74b9590940.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2020-05-05更新
|
2961次组卷
|
9卷引用:湖北省四校(襄州一中、枣阳一中、宜城一中、曾都一中)2018-2019学年高二上学期期中联考数学(理)试题
湖北省四校(襄州一中、枣阳一中、宜城一中、曾都一中)2018-2019学年高二上学期期中联考数学(理)试题广西南宁市第三中学2020-2021学年高二上学期月考(一)数学(理)试题广西南宁市第三中学2020-2021学年高二上学期月考(一)数学(文)试题浙江省绍兴市柯桥中学2022-2023学年高二上学期10月月考数学试题宁夏银川一中2020-2021学年高一上学期期末考试数学试题人教A版(2019) 选修第一册 实战演练 第二章 验收检测章节综合测试-直线和圆的方程(已下线)第一次月考押题卷(考试范围:第1章、第2章)(拔高卷)-【单元测试】2022-2023学年高二数学分层训练AB卷(苏教版2019选择性必修第一册)(已下线)第2章 直线和圆的方程(单元提升卷)-2022-2023学年高二数学考试满分全攻略(人教A版2019选择性必修第一册)
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7 . 对任意的
,不等式
(其中e是自然对数的底)恒成立,则
的最大值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36b98ef143f8159f3a7dafa1fd2f2370.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66018574ee92f4d126e77ed58185b3b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2019-12-23更新
|
1335次组卷
|
4卷引用:浙江省绍兴市柯桥区柯桥区教师发展中心2018-2019学年高二下学期期末数学试题
浙江省绍兴市柯桥区柯桥区教师发展中心2018-2019学年高二下学期期末数学试题浙江省绍兴市2018-2019学年高二下学期期末数学试题(已下线)专题3-4 超难压轴小题:导数和函数归类(1)-2022年高考数学毕业班二轮热点题型归纳与变式演练(全国通用)吉林省长春市东北师范大学附属中学2022届高三理科数学综合训练(一)
8 . 已知函数
.
(1)若不等式
在
上有解,求
的取值范围;
(2)若
对任意的
均成立,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb22a3be54684a8fd9c7fd21c432fca4.png)
(1)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4574a229c7b5c6bc5eeecc24136fe45b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7341bc611be580669eb9951000cb7fbd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ff6f5035bf817635df94bf8a5fd4c6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea4ac187cbb465180e89f38250b3970.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
名校
解题方法
9 . 已知函数
.
(1)求函数的单调区间;
(2)若方程
有两个不相等的实数根
,求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faca59b579a9dd8960cdb0e363e6023f.png)
(1)求函数的单调区间;
(2)若方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/300b85aaf54c36f00948a73875137399.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/760effa3c34aefb5d6bbd0e7ca0d48fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/344e72e708a16e7ef3e01522645566b9.png)
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2019-05-07更新
|
1509次组卷
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2卷引用:【校级联考】浙江省三校2019年5月份第二次联考数学试题
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10 . 已知向量
,
,定义:
,其中
.若
,则
的值不可能 为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bb58883caf5c8ca1e94389839d294b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fbb10314fbe1a7b3a8af7da92158d42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9944600eafc9bf8c2e62bae49f62a345.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd3ede869e508a8c8bda34a16782f863.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9331761428603a9ab3ecdb1aaf331d65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20126588f4128288dc0e0d1d84de632a.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2019-05-17更新
|
1856次组卷
|
3卷引用:浙江省绍兴一中2019-2020学年高一下学期期中数学试题