名校
1 . 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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2 . 在三棱锥
中,已知
,
,
,
,则三棱锥ABCD体积的最大值是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b5f215a42c4b7078d8d65923eb9980e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04ee826937d2add7a93aaa1422f8b736.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef0402dd5ae3db10281f9f1e11738bcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b81c92924196614f1ad82b92decd9003.png)
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2020-06-08更新
|
1606次组卷
|
4卷引用:江西省名师联盟2020届高三5月联考理科数学试题
江西省名师联盟2020届高三5月联考理科数学试题江西省丰城中学、高安二中等六校2021届高三1月联考数学(理)试题(已下线)第二章 立体几何中的计算 专题四 空间体积的计算 微点2 空间图形体积的计算综合训练【基础版】四川省剑阁中学校2022-2023学年高二下学期第一次质量检测理科数学试题
解题方法
3 . 已知数列
满足
,
.求证:当
时,
(Ⅰ)
;
(Ⅱ)当
时,有
;
(Ⅲ)当
时,有
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4f47558bbba6deebd57286647039f58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea4ac187cbb465180e89f38250b3970.png)
(Ⅰ)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9645bd4d2002993b90ec6d48f9c04f7.png)
(Ⅱ)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e94f16d5ed858699bfea5039a7bf8ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ae9f862d9c4f663a0fa786e56895440.png)
(Ⅲ)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf0086b054ef120408acac806a1b1318.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfc1715a0491fddb0403799d34e0daa0.png)
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4 . 口袋中有大小、形状、质地相同的两个白球和三个黑球.现有一抽奖游戏规则如下:抽奖者每次有放回的从口袋中随机取出一个球,最多取球2n+1(n
)次.若取出白球的累计次数达到n+1时,则终止取球且获奖,其它情况均不获奖.记获奖概率为
.
(1)求
;
(2)证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bec1b383f61d7a71f10ce999c9321381.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf83e20035c3afd6d26ebfd53d768a70.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2708fa6298e52f617383efc175b71ddc.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18adc4ec9010e1e99b882761e9c2c2e.png)
您最近一年使用:0次
2020-06-05更新
|
1873次组卷
|
4卷引用:江苏省南京市2020届高三下学期6月第三次模拟考试数学试题
江苏省南京市2020届高三下学期6月第三次模拟考试数学试题(已下线)专题10-2 概率压轴大题(理)-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)湖北省九校教研协作体2022-2023学年高二上学期9月联考数学试题(已下线)4.1.3独立性与条件概率的关系(2)
5 . 已知函数
(a
R),其中e为自然对数的底数.
(1)若
,求函数
的单调减区间;
(2)若函数
的定义域为R,且
,求a的取值范围;
(3)证明:对任意
,曲线
上有且仅有三个不同的点,在这三点处的切线经过坐标原点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2024a27d85c91efa4dace232c72549b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a02d44492b51b0e08208fdc0d1707025.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6922ed9d20c19c11aa47f599cd3b87ba.png)
(3)证明:对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80fff7c8c260edb3ce51f15f8d617633.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
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6 . 已知集合
中含有
个元素,其中
,
,集合
的含
个元素的子集的个数为
,即集合
的含
个元素的子集的个数为
,集合
的含
个元素的子集的个数为
,…记
.
(1)求
,
;
(2)证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/662ad36395979eab720186c0c8e1ee88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/112335b5cf30a8fce6a64e3b0741e1dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7601dbefa6836756e3d2731b79af0126.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36b98ef143f8159f3a7dafa1fd2f2370.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/662ad36395979eab720186c0c8e1ee88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4624141790a9fddfb8be85592ccf3e1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04a98d74cffe29576800e866e803e20e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/090426eb29836bc30c006b3739c08057.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54d826183898576f2ddc590665da99bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39222f0687c9124bddb35544bcc7798.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cbc9a4fad11ecf49de9d9310f12136d.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98928997add72c1e35f3fe3aa36a981a.png)
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7 . 设数列
满足:
.
(1)证明:
;
(2)证明:
;
(3)求正整数
,使
最小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e84bc6417c92a002baa73696258b96b.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bc2c360ef560331ab40b7d671466450.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0a04fdb6b104a8ff82ef567e170fbc2.png)
(3)求正整数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6364e16dd83b4164f0897e279e40bec0.png)
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8 . 已知矩形
为
中点,沿直线
将
翻折成
,直线
与平面
所成角最大时,线段
长是
![](https://img.xkw.com/dksih/QBM/2020/5/30/2473952856653824/2474677479284736/STEM/2ea25d16-a3d0-41b3-84f0-bd24db0c863a.png?resizew=289)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3be09e89b7210699f9ec6750e043c4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cff7399ecc698e2fb415147c96d0d03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fa7bbd7831e9ff4f8cffc8889d34f05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://img.xkw.com/dksih/QBM/2020/5/30/2473952856653824/2474677479284736/STEM/2ea25d16-a3d0-41b3-84f0-bd24db0c863a.png?resizew=289)
A.![]() | B.![]() | C.![]() | D.![]() |
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9 . 设函数
(
).
(1)试讨论函数
的单调性;
(2)设
,记
,当
时,若函数
与函数
有两个不同交点
,
,设线段的中点为
,试问s是否为
的根?说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d44ac03a9fce1f47090d5678ff140d04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
(1)试讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0046a2d3e9e1878353c66570f5f01ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/291db108c9dc0027dcac44444f1880b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f786a5701dc1a8a015e8843c3360151b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff4d12362d4b8dd25813953e1c5a94b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/564cda8329c944f998c793c2bf76efb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48cf9130204e6f481f91301bc7bc108f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cc9656749526fc8c4f223c4ce439608.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae8319f02a33dd7a181fc09473ae8cd2.png)
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10 . 已知
与
的图象至少有三个不同的公共点,其中
为自然数的底数,则
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58488fdcea8b2973a679420460484e14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/348e47ee73de0415913bc6d6ca1d9ae2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168b3e4b1d6f04226fa2687a72a268b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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