1 . 已知
,函数
.
(1)函数
的图象经过点
,且关于
的不等式
的解集为
,求
的解析式;
(2)若
有两个零点
,
,且
的最小值为
,当
时,判断函数
在
上的单调性,并说明理由;
(3)设
,记
为集合
中元素的最大者与最小者之差,若对
,
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ad9a11b81b7a8643005608eacc7f9d9.png)
(1)函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1803dc3c76fd2b51696647aa18602412.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6acb0f1ac694dd177e99fc385f23318.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa66623cf54b42d6d12be4c8edaa7071.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd5452c267983506a7cb3373e19fd5f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0268e85df43d66b031e0eccb11284452.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19f88a76f947e7022ef0c5efd6db060c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee3c6cdb19ac03dc3c28cd63b09dc907.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4802dfb4352b1162b6cda12fa469f91e.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebc20d351d51723c9b0a07a20ac14114.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf0225bca34eaf19544939b29153aac1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a0e3589ab6dda85eb6dc9cab30878f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/136da7c9e087330c312e31d1c2083d06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8119e4e1c474bc2adbe014628043609.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
名校
解题方法
2 . 已知双曲线
的离心率为
,过点
的直线
与
交于
两点,当
的斜率为
时,
.
(1)求
的方程;
(2)若
分别在
的左、右两支,点
,探究:是否存在
,使得
,若存在,求出
的值;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83bf4fd84818abac17a9d21237ac5ce5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/138bcbc42bc1c7230c4a325aee56153b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3389f53711264b0acba3ba6019f8b908.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3534269fea9ecf35691612e379fb97eb.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4b3450262867042c3a9b373e03328c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/058f2b1372b0f6cdc6b9c25fabff5eca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
您最近一年使用:0次
3 . 定义:任取数列
中相邻的两项,若这两项之差的绝对值为1,则称数列
具有“性质1”.已知项数为
的数列
的所有项的和为
,且数列
具有“性质1”.
(1)若
,且
,写出所有可能的
的值;
(2)若
,证明:“
”是“
”的充要条件;
(3)若
,证明:
或
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.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/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ddad3d9fdb5e9951b6a1c31f9a72a71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fac3649308b528fd56545ba102dc42d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb4ac9c2787e5c2b6ce99f89b50b0dcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ddad3d9fdb5e9951b6a1c31f9a72a71.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83a72be91e4148dbd19e935bd9e51a2a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1e1a57b212411267bff20b97d6c3e96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41f2867385db84ec7fac034865ea91b6.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8f4aea81669864630ee9be6f69e43fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e12058f26dd0b9319a97bdf8e3b4702.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2a19410555c6ed7f5d55becd4516609.png)
您最近一年使用:0次
4 . 已知
为锐角三角形的三个内角.
(1)求证:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c99d9baa17058766456877027b05c796.png)
(2)求
的最小值
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c99d9baa17058766456877027b05c796.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/681ec70411257b96d0f5bc56f8428397.png)
您最近一年使用:0次
2024·全国·模拟预测
名校
解题方法
5 . 在平面直角坐标系中,两点
的“曼哈顿距离”定义为
,记为
,如点
的“曼哈顿距离”为5,记为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/975cd9c58ca0f0e8913230fb47ef1875.png)
.
(1)若点
是满足![](https://staticzujuan.xkw.com/quesimg/Upload/formula/975cd9c58ca0f0e8913230fb47ef1875.png)
的动点
的集合,求点集
所占区域的面积;
(2)若动点
在直线
上,动点
在函数
的图象上,求
的最小值;
(3)设点
,动点
在函数
的图象上,
的最大值记为
,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81edb37186c919a2bb19babd562d4ff5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c59185f3d9547cd9065d10dcbb4127d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/975cd9c58ca0f0e8913230fb47ef1875.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afbe9c78193d98af6ca563b800bdd5f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/975cd9c58ca0f0e8913230fb47ef1875.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d5eefd2a1a81c67585f9f62a41fa7cb.png)
(1)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c40732ecce43a13e49377f8be09d21c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/975cd9c58ca0f0e8913230fb47ef1875.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21000022a71bdffadccc68ad2435400e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(2)若动点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/026808536f6b6d265c778e23836fbf13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2eae1b87c23b45ce5e5e74d5b1d73234.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/975cd9c58ca0f0e8913230fb47ef1875.png)
(3)设点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bec550c01b4f075f22ab67f5e55ed5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e203e4c94465a561ce1d5ba4189dc4ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/975cd9c58ca0f0e8913230fb47ef1875.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2d6bb01f1044358cc5fee441bc62489.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2d6bb01f1044358cc5fee441bc62489.png)
您最近一年使用:0次
2024-04-23更新
|
173次组卷
|
3卷引用:江西省上高二中2024届高三适应性考试数学试卷
6 . 已知二次函数
的图象关于直线
对称,且最大值为4.
(1)求函数
的解析式;
(2)设
,试比较
与
的大小;
(3)若实数
满足:①函数
有两个不同的零点;②方程
有四个不同的实数根,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68ea346328c5ac81802bda72282e27bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e55aa0a20848c37c1892c567b2315e04.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fff6e7e2b9f2b68b1647f6350b98dc8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/084cb01ee141900901f8373c0e15cf45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cc0014c54d3d529c3d619a34ba735cd.png)
(3)若实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95c7f7062a6c56025d3d0516ea68890b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1639d47583555e889c30159bc85adcb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
您最近一年使用:0次
解题方法
7 . 已知函数
,其中
为自然对数的底数.
(1)当
时,求
的单调区间;
(2)若函数
有两个零点
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3557447774bbdda64d8a5e424a3759b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/041a7c8fc017f596542c5e6ec7d1c40b.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/70cb53fbc8de171b6de175dd9b50baed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aca579894dad67bc82cb715fd48e0d70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef0fd6297d9af0dbfaccd08a53054ec5.png)
您最近一年使用:0次
2023-06-01更新
|
727次组卷
|
3卷引用:四川省成都市双流区永安中学2022-2023学年高二下学期零模模拟考试数学试题
四川省成都市双流区永安中学2022-2023学年高二下学期零模模拟考试数学试题河南省开封市等2地学校2022-2023学年高三下学期普高联考测评(六)文科数学试题(已下线)重难点06 导数必考压轴解答题全归类【十一大题型】
名校
8 . 某校20名学生的数学成绩
和知识竞赛成绩
如下表:
计算可得数学成绩的平均值是
,知识竞赛成绩的平均值是
,并且
,
,
.
(1)求这组学生的数学成绩和知识竞赛成绩的样本相关系数(精确到
).
(2)设
,变量
和变量
的一组样本数据为
,其中
两两不相同,
两两不相同.记
在
中的排名是第
位,
在
中的排名是第
位,
.定义变量
和变量
的“斯皮尔曼相关系数”(记为
)为变量
的排名和变量
的排名的样本相关系数.
(i)记
,
.证明:
.
(ii)用(i)的公式求这组学生的数学成绩和知识竞赛成绩的“斯皮尔曼相关系数”(精确到
).
(3)比较(1)和(2)(ii)的计算结果,简述“斯皮尔曼相关系数”在分析线性相关性时的优势.
注:参考公式与参考数据.
;
;
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc3d84932df1b851b147b5fb3c4fea9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15a9926a68459af801f8ac7c080f80f2.png)
学生编号 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
数学成绩 | 100 | 99 | 96 | 93 | 90 | 88 | 85 | 83 | 80 | 77 |
知识竞赛成绩 | 290 | 160 | 220 | 200 | 65 | 70 | 90 | 100 | 60 | 270 |
学生编号 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 |
数学成绩 | 75 | 74 | 72 | 70 | 68 | 66 | 60 | 50 | 39 | 35 |
知识竞赛成绩 | 45 | 35 | 40 | 50 | 25 | 30 | 20 | 15 | 10 | 5 |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f75c485cb2e79a663ab6ae3c733e3eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdb0cf43da8f127ee78ba8354d1aa406.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bebaf6f0f22ffeda6432bfff3fe05a24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8baa19bac5cebbab3ef252df9e519f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54738cf1ba98c740b3c7a07742a1f1f7.png)
(1)求这组学生的数学成绩和知识竞赛成绩的样本相关系数(精确到
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e2c4d12b3a705daab723ab243b6cc88.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0d39c74f1102624ea5c6a20f7af104d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19e3a9fffe86189933d0a9546208e8a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e40520d7c3e251f7471f890288c1b2bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a24c21d2f1b48a3252bde2653a0a95b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97ea8f47d8d8d9e1832d52b1c7425450.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcc4d8ff5faa2cee8c2e2dd576b7cb14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a20318c91376fd142453b3a7542c11c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4de122ae929b1acaff321dec137622ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca3db80b84166d02161b3dc5348f7e9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e9bb415ebf91617fe843b83d0a140ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/228668272e982853c944c99d45d121c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/171102a883b22fe6ca578efc8926f5b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
(i)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91a78fb7eea08cece87f5212d6e98ee4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/228668272e982853c944c99d45d121c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d513d82f90a06a99a98f476c244627d9.png)
(ii)用(i)的公式求这组学生的数学成绩和知识竞赛成绩的“斯皮尔曼相关系数”(精确到
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e2c4d12b3a705daab723ab243b6cc88.png)
(3)比较(1)和(2)(ii)的计算结果,简述“斯皮尔曼相关系数”在分析线性相关性时的优势.
注:参考公式与参考数据.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3ae9421919944d997c304d7711b4b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35466cb215d0eb17691675f616836b05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/584b6e1f20a8dc940900170b4dbcba48.png)
您最近一年使用:0次
2023-05-19更新
|
1207次组卷
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9 . 已知椭圆C的下顶点M,右焦点为F,N为线段MF的中点,O为坐标原点,
,点F与椭圆C任意一点的距离的最小值为
.
(1)求椭圆C的标准方程;
(2)直线l:
与椭圆C交于A,B两点,若存在过点M的直线
,使得点A与点B关于直线
对称,求
的面积的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a2c35b8cc1c960e0b45c6e76224d88f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53204688086b1d0111e91cb49fa0ac61.png)
(1)求椭圆C的标准方程;
(2)直线l:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a5464dc3bd349a216296fbaa879ae47.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13dea1bd3d0dd84b8b6f6ff634c5600c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13dea1bd3d0dd84b8b6f6ff634c5600c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a11cb104b04c4e6a1be700e81da279a.png)
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2023-05-09更新
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3卷引用:四川省广安友谊中学2022-2023学年高二第一次“零诊”模拟考试理科数学试题
2021·全国·模拟预测
名校
10 . 已知函数
,
.
(1)求函数
的单调区间;
(2)若
,且
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90387624d99e458083f26bc4889d093c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ffd1f6bd3686a07efa4086a02b96a9a.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33bd24e647a626899a243a3f3984f90a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/859458471c86ae39e0cc42d2d960d03e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52227d32ea76a28a9927b06733b23f54.png)
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