1 . 已知函数
,其中
.
(1)当
时,
,求
的取值范围.
(2)若
,证明:
有三个零点
,
,
(
),且
,
,
成等比数列.
(3)证明:
(
).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67f1fbd89d2a6c03f0afb467ad2afce5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10bbdef421c976962a270a2beabbad91.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b8c164755dc2d7cff80fb4c9cffc9be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22e38c541dec8fce1d26886e5ef7d21f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/301605e86e5a5e61a65c91cd3dd8b77e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/291c25fc6a69d6d0ccfb8d839b9b4462.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1310a7a80d1f8751a3f8cafe7f8c8b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/291c25fc6a69d6d0ccfb8d839b9b4462.png)
(3)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c8a263f0dff43a4febb0b511b41c0db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15a70b95c53fb6655721e2a8c61f5c2c.png)
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2 . 在长方体
中,
,
,
,以
为原点,
、
、
所在直线分别为
轴、
轴、
轴的正方向,建立空间直角坐标系,则点
可用有序数组
表示.空间中任意一点可用有序数组
表示,定义空间中两点
,
的距离
.
为边
(含端点)上的动点,证明:
为定值;
(2)
,
,
为空间中任意三点,证明:
;
(3)若
,
,其中
、
、
,求满足
的点
的个数
,并证明从这
个点中任取11个点,其中必存在4个点,它们共面或者以它们为顶点的三棱锥体积不大于
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de5d5dc7fd9e2a9ebac16a4147979d13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca9ce42d7ae1d4b67045e78c3ab05f52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf9e23910557d245d6e7d5959d91e135.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a334cd1d83ebe328877006f689e28bf9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4f605ec0729ce6d72237ad662a06862.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef8337706c550bc095d7a2bd872221a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c66066f64a28eb515f8de3a4e063292e.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/e81e59019989b7dc2fb59b037ef6e010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3953cec61ac602ce5eb59b7912352179.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b5ff1d52b11822af84e82488a9e546e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d594e1827f2d6d03295009b1ed75b3d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0f92b567c6128f0ada19a3b7a243abb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2beb0dd80eb2f71473e399c1332ce71f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2f0eabf0b9199ff58f94b72507b051a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e50c35157956d1d4679598ee26bd408d.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f63a978622110d66c5fdb4c9ed08539b.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c289e83620c6a6f873d116eed1e053f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba96eac12eb5f43f43b74d7f513f725e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/291c25fc6a69d6d0ccfb8d839b9b4462.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9314bd1d7a6e070f4f2428f9a321804e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50ecc49abb6be7701f68cfc09598c324.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9c7f3377167e892a662c15787b372f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a391005600bdd69c96750589f9adb048.png)
您最近一年使用:0次
名校
解题方法
3 . 已知数列
的前
项和为
,满足
;数列
满足
,其中
.
(1)求数列
的通项公式;
(2)对于给定的正整数
,在
和
之间插入
个数
,使
,
成等差数列.
(i)求
;
(ii)是否存在正整数
,使得
恰好是数列
或
中的项?若存在,求出所有满足条件的
的值;若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.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/83fd67e206753eff52406291c19daa38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f329b217e1051b23f0d61023cdc6e69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f23f7f601ad9971d3de3e2dd820642e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59dd6c97d2ee3e74ba5730f1cbcc1d43.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0197eeeeaafec6b1fdd7bb8509572f6b.png)
(2)对于给定的正整数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fd6f136f7c8d27b406c0993dcfece54.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50a272adba0f1120109824440f0e252c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4b8d5b6045219ea4527202ab131bb2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c05b9832b09731a574d4a4adf7448de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/417083c7157cf0b45befc7c537f1012c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/629e172f62f389ea84b7d771c1c27566.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a039f1df440117fe89030a4ad6dcf291.png)
(i)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22be6bbf70b5c135edaf8db69118cb50.png)
(ii)是否存在正整数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d75ed0812322ed46d25ec41f609674be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f329b217e1051b23f0d61023cdc6e69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
2024-03-19更新
|
2001次组卷
|
6卷引用:福建省莆田第四中学2023-2024学年高二下学期第一次月考数学试卷
名校
4 . 已知函数
.
(1)证明:当
时,
;
(2)若函数
有两个零点
.
①求
的取值范围;
②证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12adf5ef80e4a31decd3e8ec1905a534.png)
(1)证明:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4b4f444d4dc94ff61b2e64e5ff92372.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e9c599e8d420006448905acec2b8234.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12bb063fcb1954df530b1d406f82305a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
①求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
②证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b6d418c37e725323e7333bc26ff0526.png)
您最近一年使用:0次
2024-03-12更新
|
1039次组卷
|
2卷引用:福建省莆田市2024届高三毕业班第二次教学质量检测数学试卷
名校
5 . 已知函数
.
(1)若
,曲线
在点
处的切线与直线
垂直,证明:
;
(2)若对任意的
且
,函数
,证明:函数
在
上存在唯一零点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c90ba56757804269fd2c2c6154181fd3.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0afb80007983e5b99dcdeebf87d18ff4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3832d863e6cefdfe45cff4319e1fbdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/512f4c29ff276b7f35052ad4cc255ab5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b598d1132f5476f821762e69232c2d15.png)
(2)若对任意的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26d8dafc71b106f39f4e15442220897b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3225bcc8a5cdbe6bbda1898e63a97e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/028517e8bebe634441e0a5c79828e88a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/122ab6b0f9f834c7f7abcf957a85e83d.png)
您最近一年使用:0次
2024-03-12更新
|
1038次组卷
|
3卷引用:福建省莆田第四中学2023-2024学年高二下学期第一次月考数学试卷
名校
解题方法
6 . 已知曲线
为
上一点,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/876b36fff656422c9099828bcb02fb7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
A.![]() ![]() |
B.曲线![]() |
C.![]() ![]() |
D.过点![]() ![]() ![]() |
您最近一年使用:0次
名校
7 . 如图所示的六面体中,
,
,
两两垂直,
连线经过三角形
的重心
,且
,则( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/19/09457a3d-4a27-4e4f-acdc-aef9a4bd959c.png?resizew=160)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a6e2867f32d3f1c3cd36cd3a11a8580.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d4db9b82b67efe45a02fca32bfcf5dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c2bc5e50b8dfa02601c70822252854a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09fcb20a6972108871adbf284f9e5006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f07e98f7a65097311e8d93bd9f2af26e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/19/09457a3d-4a27-4e4f-acdc-aef9a4bd959c.png?resizew=160)
A.若![]() ![]() ![]() |
B.若![]() ![]() ![]() |
C.若![]() ![]() |
D.若点![]() ![]() ![]() |
您最近一年使用:0次
2023-12-20更新
|
770次组卷
|
3卷引用:福建省莆田市莆田第一中学2024届高三上学期第一次调研数学试题
名校
解题方法
8 . 加斯帕尔
蒙日(图1)是18-19世纪法国著名的几何学家,他在研究圆锥曲线时发现:与椭圆相切的两条垂直切线的交点的轨迹是以椭圆中心为圆心的圆.我们通常把这个圆称为该椭圆的蒙日圆(图2).已知椭圆
的左、右焦点分别为
,点
均在
的蒙日圆
上,
分别与
相切于
,则下列说法正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/17/10a10d7f-0852-4194-83c5-ed2a0ba87150.png?resizew=314)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c97ec04a1aa7ac6fce72d589864940a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/635e163410277bc3f5645649c4b5d35b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40f98254a6193566587a70c7d95fdabf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5ad58997b9dc0b341c9af08f0cd1fbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5e58e5a299e7b6b508c61244b93ae1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ae6f48b9a53c0155a692509cf31f7e6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/17/10a10d7f-0852-4194-83c5-ed2a0ba87150.png?resizew=314)
A.![]() ![]() |
B.设![]() ![]() ![]() |
C.长方形![]() ![]() ![]() |
D.若直线![]() ![]() ![]() ![]() ![]() |
您最近一年使用:0次
9 . 已知函数
.
(1)讨论函数
的单调区间;
(2)当
时,
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10e93aa746ec436ef3f412fb65f14401.png)
(1)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/225e45061230fe78d9163c7d0700b5f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2023-09-21更新
|
284次组卷
|
2卷引用:福建省莆田市第三中学2024届高三上学期期中数学试题
名校
解题方法
10 . 已知双曲线
的左、右焦点分别是
.点
为
左支上的一点,过
作与
轴垂直的直线
,若
到
的距离
满足
,则
的离心率
的取值范围为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a2cfa22139b3e9c9a73500e1ba19f52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b2bcc50452e97fad3e04b02e7cb39f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168b3e4b1d6f04226fa2687a72a268b4.png)
您最近一年使用:0次
2023-09-18更新
|
1168次组卷
|
6卷引用:福建省莆田市哲理中学2023-2024学年高二上学期综合训练二数学试题