1 . 已知点列
,其中
.
是线段
的中点,
是线段
的中点,…,
是线段
的中点,….记
.则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbfc875ca919921e8f63a6fca648561b.png)
_____ ;![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85cc4b12b2d4b577233f34c5b101e270.png)
_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6533885e6ff5caee271f16124a8fe50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97d843d4a4b74fee6b780fe349420985.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04b56e44e4f0424a2b7a45567120a2e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/473913c0887bb64d386f4c02f1853452.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e47cd514b2920609e3781c87df6ab70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11603c89c66f064b263af841dae023f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3cfeacc29e6a61c5b3b4e439c0a91df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69a4f2bafc3346d14a8967ce2546157d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c775fc62e7696028a9184e5212f0446.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbfc875ca919921e8f63a6fca648561b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85cc4b12b2d4b577233f34c5b101e270.png)
您最近一年使用:0次
2021-08-06更新
|
506次组卷
|
4卷引用:湖北省武汉西藏中学2022-2023学年高二下学期期末数学试题
2 . 对于数列
,
及常数p,若满足
,且
,则称
对
关于p耦合.
(1)若
对
关于0耦合,且
,
,求
;
(2)若
对
关于1耦合,且
,求
,
的通项公式;
(3)若存在
,
,使得
对
关于
耦合,且
对
关于
耦合,证明:
,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6feaac12fc936cfdb0ea4e4f09b67232.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44a2246d7a4b5e2ba8179c33d8c910b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/385275d29d8c8a7841eaeaa3dfab2cdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e6ca5eff84019e79ace9a837d230304.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebaf2a2590bb84d646957f913d78f6dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(3)若存在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8be646cd52d7f2f1714e7542e75810f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adad9633b73dfbbb3d84b4f15979e99e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8be646cd52d7f2f1714e7542e75810f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/362832fa3d3c13c1eafd565349d66dce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cd6684f2f1b943b77500917199da813.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adad9633b73dfbbb3d84b4f15979e99e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8be646cd52d7f2f1714e7542e75810f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9289f4726a0101a2edeb0d112da3b867.png)
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名校
解题方法
3 . 记
为数列
的前
项和,满足
,
,若
对任意的
恒成立,则实数
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.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/40f4e1236d7dc0366d9523d0cbb426be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63c221a2faf6197813777b4a54c0d978.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c7bc7010290872137df8c8ff6ee07ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e145b6046bc80d0ffecc61ac67c87ca1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
A.![]() | B.![]() | C.![]() | D.4 |
您最近一年使用:0次
2018-05-14更新
|
1341次组卷
|
6卷引用:湖北省襄阳市第三中学2022-2023学年高二上学期期末数学试题
湖北省襄阳市第三中学2022-2023学年高二上学期期末数学试题【全国市级联考】福建省宁德市2018届高三下学期第二次(5月)质量检查数学(文)试题【全国百强校】河北省石家庄二中2018届高三三模文科数学试题(A)【全国百强校】福建省龙岩一中2018-2019学年高二(上)模块考试数学(文科)试题新疆维吾尔自治区乌鲁木齐市米东区乌鲁木齐市第101中学2023届高三上学期1月月考数学试题(已下线)期末测试卷01(测试范围:第1-4章数列)-2023-2024学年高二数学《重难点题型·高分突破》(人教A版2019选择性必修第二册)
4 . 已知数列
:
的前
项和为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b916d8017d0c8ca772dfec81ce68c6b8.png)
_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9252a07dec2c5d4b1ba6c4d2a737848a.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/b916d8017d0c8ca772dfec81ce68c6b8.png)
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5 . 已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0c1cf727ac5793bfbe8b58515a8dd29.png)
.
(1)讨论
的零点个数.
(2)正项数列
满足
,
(
),求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0c1cf727ac5793bfbe8b58515a8dd29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec3e3bcd67cf1a355986c6e3132470c7.png)
(1)讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)正项数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/352d9b76dcf639368fa68cae70149802.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a00279b758d34f093589618dc76ffbf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36b98ef143f8159f3a7dafa1fd2f2370.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c7f3f50d9fab6c44d619524652f6721.png)
您最近一年使用:0次
2020-07-21更新
|
489次组卷
|
2卷引用:湖北省鄂州市第二中学2022-2023学年高三下学期2月月考数学试题
名校
6 . 在数列的每相邻两项之间插入此两项的积,形成新的数列,这样的操作叫做该数列的一次“扩展”.将数列
进行“扩展”,第一次得到数列
;第二次得到数列
;….设第
次“扩展”后得到的数列为
,并记
,其中
,则数列
的前
项和为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8276d70443c3f3c3cbdf128fae8925c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a2303277c24a13d9f8ef622f841ca6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c2c9b3aad25029a97ef5e813d6c5a11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58c96582b6ccd8520e7873a006c55cd3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f21439a5132fd2c138e242cf3ce9f9f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1621bd4aa4545c1fe4c2196aa48efdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
您最近一年使用:0次
2018-05-09更新
|
972次组卷
|
3卷引用:【全国百强校】湖北省黄冈中学2018届高三5月第三次模拟考试数学(理)试题
名校
7 . 已知函数
的图象经过点
和
,记![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23a941fd5008f9ef49e8adad40063b4e.png)
(1)求数列
的通项公式;
(2)设若
,
,
,求
的最小值;
(3)求使不等式
对一切
均成立的最大实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d2a119403159f251ca90d8b6f23ecbc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39ea1f5bdd213c7c3a571b4c38850bf1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79485e42b7546ccfa3cd6d08491460f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23a941fd5008f9ef49e8adad40063b4e.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)设若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7d3d55a85012933f91c5d8d27d8801d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43d47456f316f2a761cf3f081decf3d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cec6a5cb93ba04f2e1b9209f8c4642e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(3)求使不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a04b7defcd768444d1cce4990548b3b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea4ac187cbb465180e89f38250b3970.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
您最近一年使用:0次
2018-07-14更新
|
828次组卷
|
3卷引用:【全国百强校】湖北省宜昌市第一中学2017-2018学年高一下学期期末考试数学(理)试题
8 . 已知数列
和
满足:
,其中
为实数,
为正整数.
(1)证明:当
时,数列
是等比数列;
(2)设
为数列
的前n项和,是否存在实数
,使得对任意正整数n,都有
?若存在,求
的取值范围;若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccacf31ad0d957cc1fdfe846413d7854.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
(1)证明:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cc3c95b5fb6a85cd4275acb23e8a8c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(2)设
![](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/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f740d370ffa09a06354f981b7fe7881.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
您最近一年使用:0次
解题方法
9 . 已知数列
前n项和为
,
,
,
,设![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f2f05c09a35346b62d8bdaf95bfaea.png)
(1)是否存在常数k,使数列
为等比数列,若存在,求k值,若不存在,说明理由.
(2)求
的表达式,并证明
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18d8e8f821111de8075e5c3dfb22a5d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3978c147211401cfa8f6f6984d4542a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f2f05c09a35346b62d8bdaf95bfaea.png)
(1)是否存在常数k,使数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a323ef99ce96bef2781553fdc1c724e.png)
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名校
解题方法
10 . 已知三个数
成等比数列,其倒数重新排列后为递增的等比数列
的前三项,则能使不等式
成立的自然数
的最大值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/273110e751bc8f86e07172f770d484bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b27434fcec11af4ece701e3a39d65d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
A.9 | B.8 | C.7 | D.5 |
您最近一年使用:0次