1 . 已知集合
,其中
且
,
,若对任意的
,都有
,则称集合A具有性质
.
(1)集合
具有性质
,求m的最小值;
(2)已知A具有性质
,求证:
;
(3)已知A具有性质
,求集合
中元素个数的最大值,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f12d3cd8f71a493b992647877b7da96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a80c5e31db0cd36e415229685de33e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bcfc48f9bc23cc43085bdb910e7a136.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a8ecc8eb8eb4e2509897fcbff92db49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2a578e8271c92160a8914460b09bfd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd24a572b923f59906ebc90d3aa311cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5e86a882ef57f44f0ad22836079afe1.png)
(1)集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff5892d36ab3e0df852a14b28a36296d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/700537ac93b9dddbeb05d74067a03666.png)
(2)已知A具有性质
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1aa9b9ef8fafe39ef9982a63a82590d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e68dc3bd653ea503d500677612629ac8.png)
(3)已知A具有性质
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1aa9b9ef8fafe39ef9982a63a82590d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
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名校
2 . 在处理多元不等式的最值时,我们常用构造切线的方法来求解.例如:曲线
在
处的切线方程为
,且
,若已知
,则
,当
时等号成立,所以
的最小值为3.已知函数
,若数列
满足
,且
,则数列
的前10项和的最大值为________ ;若数列
满足
,且
,则数列
的前100项和的最小值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c72a671c1fba30deaf0f1bbbd4f34df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7152aea5d046953a8c931571be7c529.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adb815fd4ab37e3acce07473dddc6d5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29f285defc2f91858fae9472d090ef34.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4dd6e208196f02dba2106dbcfb68569.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8285778d6832045498a16d1ceb1da957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91540ab4e6e0ac4b7be750ad9f9c5f6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a871d59989f13df946a72de050e7ec53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03f79a1c4c9f83d94fe1ebcc3ecfc0a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/065054f4e163585d630aa42cb6323a3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36562bec957b5ab3ca3b64bc3dc1c1aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/282328f6df9c9c524084dc76f8499a3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a083c38783fda991b05eaf051ee6c1df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4a4465705237c08e4e05d849cb28d0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/792ce88874b917946843d4ed3da3ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77b7ab69e9605abf49d8d42c2382bb24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed63f4ab8e272b2b0083b2086315e1b1.png)
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2022-10-20更新
|
323次组卷
|
2卷引用:广东省广州市华南师范大学附属中学2023届高三上学期第一次月考数学试题
3 . 已知数列
满足
,
,令
,设数列
前n项和为
.
(1)求证:数列
为等差数列;
(2)若存在
,使不等式
成立,求实数
的取值范围;
(3)设正项数列
满足
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8363902560fce392e05042b7287929a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bacbbf38ec1b411cfd9693874bebd4a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e5fc0b571e6545e133d36af338733b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
(1)求证:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(2)若存在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccb3185977be193745f403547d1e9800.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc8261beeefacd521644faf4658227a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
(3)设正项数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41d1dbbe083e1e1672b2439ea746d976.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bf47abf4f5649d379a8a69983a3fc56.png)
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2022-07-21更新
|
1594次组卷
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7卷引用:广东省广东实验中学2023届高三上学期第一次段考数学试题
广东省广东实验中学2023届高三上学期第一次段考数学试题四川省眉山市2021-2022学年高一下学期期末数学(理)试题(已下线)4.2.3 等差数列的前n项和-2022-2023学年高二数学《基础·重点·难点 》全面题型高分突破(苏教版2019选择性必修第一册)(已下线)4.2.2.2 等差数列的前n项和的性质及应用(练习)-2022-2023学年高二数学同步精品课堂(人教A版2019选择性必修第二册)(已下线)专题15 数列不等式的证明 微点6 数列不等式的证明综合训练(已下线)数列与不等式(已下线)4.1 等差数列(第2课时)(十三大题型)(分层练习)-2023-2024学年高二数学同步精品课堂(沪教版2020选择性必修第一册)
21-22高二下·广东深圳·期中
名校
解题方法
4 . 已知函数
,其中![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d65c909f0297cf0ff85e12c9367f1114.png)
(1)若
有两个极值点,记为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a75d5cbdd3238fbd219345b5a28d425.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e45bcd8f6ede8cc2513ad41402f40086.png)
①求
的取值范围;
②求证:
;
(2)求证:对任意
恒有
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13c4298a188aa8f9a73d2c77fe585046.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d65c909f0297cf0ff85e12c9367f1114.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a75d5cbdd3238fbd219345b5a28d425.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e45bcd8f6ede8cc2513ad41402f40086.png)
①求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
②求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03ca13a93b5f401c0d39ba52b0cffcb0.png)
(2)求证:对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcef9973fc8cb94811060cc28f2d8a21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5598c66b0091de375e927c279468899a.png)
您最近一年使用:0次
2022-04-30更新
|
636次组卷
|
3卷引用:广东省深圳中学2021-2022学年高二下学期期中数学试题
(已下线)广东省深圳中学2021-2022学年高二下学期期中数学试题宁夏回族自治区银川一中2022届高考三模数学(理)试题江苏省南京市金陵中学河西分校2022-2023学年高二下学期3月阶段检测数学试题
2020高三上·全国·专题练习
5 . 已知数列
满足
,且当
时,
.
(1)求证:数列
是等差数列,并求数列
的通项公式;
(2)记
,
,证明:当
时,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/352d9b76dcf639368fa68cae70149802.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0704f453b2de48d36911f7db496bbf82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc0f239eed588e971277cdfaf7e14708.png)
(1)求证:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7149fb71456c934cf5fe602c9bfddcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
(2)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba6b94a1c4a58ea6ec3541ffd969d9c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dd2d540aa82078d246c1beedd8a8000.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36b98ef143f8159f3a7dafa1fd2f2370.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efece7b2b9bcf773dda518eafba4a089.png)
您最近一年使用:0次
名校
6 . 已知数列
满足:
,
,
前
项和为
的数列
满足:
,
,又
.
(1)求数列
的通项公式;
(2)证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9042ea58c80eab852af7fe72980d4ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0ba2efb4674cbc52ce744836fb0e21e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.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/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59dd6c97d2ee3e74ba5730f1cbcc1d43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86795d9c9488ebced9be6a899a55dd96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ab548a0fd7eb2c1949ad3d797480f9c.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b13a36fc42d03746ea33dbd64d3cc54.png)
您最近一年使用:0次
2020-05-15更新
|
526次组卷
|
3卷引用:广东省中山市2020-2021学年高二上学期期末数学试题
解题方法
7 . 设
,
是函数
的图像上的任意两点.
(1)当
时,求
的值;
(2)设
,其中
,求
;
(3)对于(2)中的
,已知
,其中
,设
为数列
的前n项的和,求证
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f6470c6a4349ea591ce2bbcd93199f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ee844c70ab064971860fb0a2b00acb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2eabd6f2b9add9d973e3c7b004ad11e.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e8d8441014892f9ad3dbaad3f89774e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d58b0e00d782782712e3ba9076ad8f3.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d00ddfeda0209b335a6bb09a7eef668a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e145b6046bc80d0ffecc61ac67c87ca1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
(3)对于(2)中的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f84541d2c89a255d63d30c67a885a0ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e145b6046bc80d0ffecc61ac67c87ca1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c49337d2a78b1d0b611cc940b1b136c5.png)
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12-13高二上·广东·期末
8 . 已知数列{an}中,
,设
.
(1)试写出数列{bn}的前三项;
(2)求证:数列{bn}是等比数列,并求数列{an}的通项公式an;
(3)设{an}的前n项和为Sn,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce53065131a665df8868b74e7a274705.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e43a949f999db0531883b3917504c4a7.png)
(1)试写出数列{bn}的前三项;
(2)求证:数列{bn}是等比数列,并求数列{an}的通项公式an;
(3)设{an}的前n项和为Sn,求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ef0a0efa8339659d644e88f527c9fab.png)
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10-11高三·广东广州·阶段练习
9 . 给定函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73ea4dd3e394e66224e114eeb429feb2.png)
(1)试求函数f(x)的单调减区间;
(2)已知各项均为负的数列{an}满足,
,求证:
;
(3)设bn
,Tn为数列 {bn} 的前n项和,求证:T2012﹣1<ln2012<T2011.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73ea4dd3e394e66224e114eeb429feb2.png)
(1)试求函数f(x)的单调减区间;
(2)已知各项均为负的数列{an}满足,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33fe364f09bdeba610b00044b9c11ab2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fa37444f208f37feb3274a15c609b98.png)
(3)设bn
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db9d9e20811497b51a68a7577c54c2bd.png)
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