名校
解题方法
1 . (1)证明:当
时,
;
(2)已知正项数列
满足
.
(i)证明:数列
为递增数列;
(ii)证明:若
,则对任意正整数
,都有
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca947e8ea00b7a485097ecafd2dfcae9.png)
(2)已知正项数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f91f8b7476e67db488d85c3a14ffa6d.png)
(i)证明:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0496f142d8ae5acb06e83526eaa3ef87.png)
(ii)证明:若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90f2db682457da2d4abd0e7cca1bdf40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38d8a310323506a3c2f3626dec8d781f.png)
您最近一年使用:0次
2 . 已知椭圆
的离心率为
,点
在
上.
(1)求椭圆
的方程;
(2)过点
的直线
交椭圆
于
两点(异于点
),过点
作
轴的垂线与直线
交于点
,设直线
的斜率分别为
.证明:
(i)
为定值;
(ii)直线
过线段
的中点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e90064d012356de1877aa697cd6d6ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60f2a72c6d7780757ab065fb29f47526.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/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84d454c82d9e52747563d47b68099249.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5671fb25040a712a49e8c8148d67d300.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90963760acac7bfad3ae03088c6c80b0.png)
(i)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b69e3f7ddd51215d00661c09cd900d60.png)
(ii)直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b1ec05e3cec27677ded7b4aecaa62d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892909e49156f7dcc0650fcd65243877.png)
您最近一年使用:0次
解题方法
3 . 已知
且
,设
是空间中
个不同的点构成的集合,其中任意四点不在同一个平面上,
表示点
,
间的距离,记集合![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58a65680a7f5b5b93239c7dbdc1edd22.png)
(1)若四面体
满足:
,
,且![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce519312a849963b376c202c3f9d7cf7.png)
①求二面角
的余弦值:
②若
,求![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18c84afeae87337f9b22fa12902222d1.png)
(2)证明:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e1ef3399691fa63838aa0474d25b9dc.png)
参考公式:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5818ede14d21f6df9ef9c2bfe09286c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a37a59558292ad6b3d0978bfd7484990.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5ebfda261c4a27e1fa2ee5fc6d4bdfb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58a65680a7f5b5b93239c7dbdc1edd22.png)
(1)若四面体
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95c12f98844971f91baaeed4775a72e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bd6a2b112facda441f4e34bf5c145fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce519312a849963b376c202c3f9d7cf7.png)
①求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c2898853a3396f0878af9eac934416d.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e10e0b10442a269fe929eb8e592cb1ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18c84afeae87337f9b22fa12902222d1.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e1ef3399691fa63838aa0474d25b9dc.png)
参考公式:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c27d71b7260e008ebefdb79da3a2f3e4.png)
您最近一年使用:0次
名校
解题方法
4 . 已知
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4d7c90daa21eebaa46dd133d8e2f903.png)
(1)证明:当
时,
;
(2)令
,
(i)证明:当
时,
;
(ii)是否存在正实数
,使得
恒成立,若存在,求
的最小值,若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40f4e1236d7dc0366d9523d0cbb426be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4d7c90daa21eebaa46dd133d8e2f903.png)
(1)证明:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0704f453b2de48d36911f7db496bbf82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e636cb16fed46289f92b91910986cdf6.png)
(2)令
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cbf6f1bd3b60dd7cf0d288ecb38922c5.png)
(i)证明:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0704f453b2de48d36911f7db496bbf82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03488728d98c4c61c0b1998ccbbb535c.png)
(ii)是否存在正实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2b7ea47ee2b64ebfc1f06da577f07d1.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
5 . 已知椭圆
,椭圆
与椭圆
具有相同的离心率,且经过点
.
(1)求
的标准方程;
(2)若
的焦点在x轴上,
为
上一点,A、B两点在
上,且线段PA、PB的中点都在
上.
(i)当点P运动时,
的面积是否为定值?若是,求出该定值;若不是,请说理由;
(ii)记
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f036026cd92e9ad059c3f22a7658638.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b86022205a7487439dd8d0897cd3bf19.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7775aa57ca0e62216f3039ed88dceed0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
(i)当点P运动时,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2205cffebf8c4d5f81d15ed7b85c8936.png)
(ii)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebd07c11236a5d229135c88e66c13778.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43660b1543b3a2b46185f7629d28a963.png)
您最近一年使用:0次
6 . 高斯是德国著名的数学家,近代数学的奠基者之一,享有“数学王子”的称号,用其名字命名的“高斯函数”定义为:对于任意实数x,记
表示不超过x的最大整数,则
称为“高斯函数”.例如:
,
.
(1)设
,
,求证:
是
的一个周期,且
恒成立;
(2)已知数列
的通项公式为
,设
.
①求证:
;
②求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c4f5908d6a1217e493ed7586b6964dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7179c645736d68c90023f83d7f11ed01.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a84bb2c73d7560f8543ee90fd3cfd87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ce33c9b4713d3027ffcc1321800bfdc.png)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc886ed87255efa6007b3e5d1df429a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24a57996290794e082b21d8f1dfc322a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86b92b70365c63607daecdc8deb73ecf.png)
(2)已知数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69cde4038ab5a4ede107d02d41861fba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/058f67ed1a4372f6a807c14d4c8fa3a4.png)
①求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbb605f0ddd311d1a092c5be5ae29260.png)
②求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21f275ffdb11a31a07fc8569ddda7a6a.png)
您最近一年使用:0次
7 . 设
是各项为正的无穷数列,若对于
,
(d:为非零常数),则称数列
为等方差数列.那么( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4cf3c9b35c6e0863c581e160ac6a9be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/782fdf6345302a3d8814acf96f6b3acb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
A.若![]() ![]() |
B.数列![]() |
C.若![]() ![]() |
D.若![]() ![]() |
您最近一年使用:0次
名校
8 . 已知函数
,
且
.
(1)讨论
的单调性;
(2)比较
与
的大小,并说明理由;
(3)当
时,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db741e3711e2f6d20b1390ed5739756b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45ba6b6aa6c3f9faba6b03bc193a6e61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e2015b8dd73e9ab0eae4a13dd591d32.png)
(1)讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)比较
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/935188093070b35d49e16e585ea02d0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/275ee9b02024a78617f0149d4bf6fcda.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f093c61867ee4ce75f951d46b9b123.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3342f3b90cb012d45ece926c8a7ea202.png)
您最近一年使用:0次
2024-04-10更新
|
1006次组卷
|
4卷引用:重庆市开州中学2024届高三下学期全国卷模拟考试(一)数学试题
重庆市开州中学2024届高三下学期全国卷模拟考试(一)数学试题河南省名校2023-2024学年高三下学期高考模拟4月联考数学试题(已下线)专题1 数列不等式 与导数结合 讲(经典好题母题)(已下线)专题9 利用放缩法证明不等式【练】
名校
解题方法
9 . 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
|
2005次组卷
|
6卷引用:重庆市西南大学附属中学校2023-2024学年高三下学期全真模拟集训(一)数学试题
名校
10 . 抛物线
与椭圆
有相同的焦点,
分别是椭圆的上、下焦点,P是椭圆上的任一点,I是
的内心,
交y轴于M,且
,点
是抛物线上在第一象限的点,且在该点处的切线与x轴的交点为
,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16231e127f8a00b343c1986f65f0ab56.png)
____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8516f71467b419293fa27df70bdaed74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/332f0dc7afc21adbab48acae2eaf875b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33d776753746914c2410a3946c357f35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ede935419d69a161bb22fd513647da06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3900190c901795456d20b1939916dafd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcc675d3c35af2425ec134743250ceae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c153922d3e1fec7dcb99c1713459547.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57aa9c9b0ab417c0b952809669f6161b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16231e127f8a00b343c1986f65f0ab56.png)
您最近一年使用:0次
2024-02-27更新
|
907次组卷
|
5卷引用:重庆市开州中学2024届高三下学期高考模拟考试(二)数学试题