名校
解题方法
1 . 已知数列
的前
项和
满足
,记
,数列
的前
项和为
,且对任意的
恒成立,则( )
![](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/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a29f39b208abece91e5acf117723dce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a21fa97e82bb67e263b94fa1612c157.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32b89a80dbd80aaf5b6d25a914001320.png)
A.![]() | B.![]() |
C.![]() | D.![]() ![]() |
您最近一年使用:0次
7日内更新
|
166次组卷
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2卷引用:黑龙江省伊春市铁力市第一中学校2023-2024学年高二下学期期中考试数学试卷
2 . 设
为1,2,3,…,n的一个排列,若该排列中有且仅有一个i满足
,则称该排列满足性质T.对任意正整数n,记
为满足性质T的排列
的个数.
(1)求
的值;
(2)若
,求满足性质T的所有排列的情形;
(3)求数列
的通项公式.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9304e71a623c4412188a800046a970d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8aefec328416eae477726adce1a7705f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82e260b088f071983f254ce8f5163fcd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9304e71a623c4412188a800046a970d0.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/367c96a0ff95b92877eda2a7c98871e1.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fac3649308b528fd56545ba102dc42d5.png)
(3)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a77316e06c00a9086be642f7f590684.png)
您最近一年使用:0次
名校
解题方法
3 . 若给定数列
,对于任意的
,若满足
,则称
为“
型数列”.若数列
满足:
,
,当
时,
.
(1)判断数列
是否为“
型数列”,并证明;
(2)求数列
的通项公式;
(3)若
,
,使不等式
成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e97769855336d73371930df1f187875e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b44c9c095c6817ad1908118a8fe5a4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f54ea75eebaf67b500b8f80f050f1e6.png)
![](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/2693734765399876e9e93cdb110231c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0704f453b2de48d36911f7db496bbf82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cbf7a076d6cfbbabf8d9ac6f814add7.png)
(1)判断数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13a8c42bbeebd847037ea509702132bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f54ea75eebaf67b500b8f80f050f1e6.png)
(2)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/878b4bc8b23c9f486874016f32221333.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7a67d9c9d7a6771dd2d3578cd4ab05c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd4741ab55cc092588667a7a1397fc2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
您最近一年使用:0次
4 . 南宋的数学家杨辉“善于把已知形状、大小的几何图形的求面积,体积的连续量问题转化为求离散变量的垛积问题”.在他的专著《详解九章算法·商功》中,杨辉将堆垛与相应立体图形作类比,推导出了三角垛、方垛、刍薨垛、刍童垛等的公式.如图,“三角垛”的最上层有1个球,第二层有3个球,第三层有6个球……第
层球数是第n层球数与
的和,设各层球数构成一个数列
.
的通项公式;
(2)证明:当
时,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cbad207743c20091cdc5e2114184a01.png)
(3)若数列
满足
,对于
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a0876215b2fd463d151523cd3c6b447.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a0876215b2fd463d151523cd3c6b447.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)证明:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cbad207743c20091cdc5e2114184a01.png)
(3)若数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c1ecbdd820cb0c4945e124d29a2b9d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a37a59558292ad6b3d0978bfd7484990.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f2360a6dbfca8164cebf81fff5a7282.png)
您最近一年使用:0次
解题方法
5 . 入冬以来,东北成为全国旅游和网络话题的“顶流”.南方的小土豆们纷纷北上体验东北最美的冬天,这个冬天火的不只是东北的美食、东北人的热情,还有东北的洗浴中心,拥挤程度堪比春运,南方游客直接拉着行李箱进入.东北某城市洗浴中心花式宠“且”,为给顾客更好的体验,推出了
和
两个套餐服务,顾客可自由选择
和
两个套餐之一,并在App平台上推出了优惠券活动,下表是该洗浴中心在App平台10天销售优惠券情况.
经计算可得:
,
,
.
(1)因为优惠券购买火爆,App平台在第10天时系统出现异常,导致当天顾客购买优惠券数量大幅减少,现剔除第10天数据,求
关于
的经验回归方程(结果中的数值用分数表示);
(2)若购买优惠券的顾客选择
套餐的概率为
,选择
套餐的概率为
,并且
套餐可以用一张优惠券,
套餐可以用两张优惠券,记App平台累计销售优惠券为
张的概率为
,求
;
(3)记(2)中所得概率
的值构成数列
.
①求
的最值;
②数列收敛的定义:已知数列
,若对于任意给定的正数
,总存在正整数
,使得当
时,
,(
是一个确定的实数),则称数列
收敛于
.根据数列收敛的定义证明数列
收敛.
参考公式:
,
.
![](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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
日期![]() | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
销售量![]() | 1.9 | 1.98 | 2.2 | 2.36 | 2.43 | 2.59 | 2.68 | 2.76 | 2.7 | 0.4 |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/decf6657efa807fc90353c5e6be0a263.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0064de1b957bc9b668565180e34f6f19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f36001b6081f8168466384adb24065c.png)
(1)因为优惠券购买火爆,App平台在第10天时系统出现异常,导致当天顾客购买优惠券数量大幅减少,现剔除第10天数据,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(2)若购买优惠券的顾客选择
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d33adb74906403b0b00fcbd9fa691d8b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eac97e6740365c85ad857aff85cefbe5.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/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf83e20035c3afd6d26ebfd53d768a70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf83e20035c3afd6d26ebfd53d768a70.png)
(3)记(2)中所得概率
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf83e20035c3afd6d26ebfd53d768a70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ddd7841ef44b17863697517fb5f3039d.png)
①求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf83e20035c3afd6d26ebfd53d768a70.png)
②数列收敛的定义:已知数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/711c92626a97e6b778b3aa86e663ee97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4ccd4537f4dee2050ade38b972eb9b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/985dc26a89252b2e8dea815c529a2ffb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/512e8bacfff15253901cd216a1e42013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c5a325806df1a1c3e7ce609fe99085f.png)
参考公式:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0aa225ad36ee50c40869d87f694b6c54.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a58291bd91befe1061530246da983727.png)
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2024-04-17更新
|
1710次组卷
|
4卷引用:东北三省四市教研联合体2024届高考模拟(一)数学试卷
东北三省四市教研联合体2024届高考模拟(一)数学试卷东北三省四城市联考暨沈阳市2024届高三下学期数学质量检测(二)江西省宜春市丰城市第九中学2023-2024学年高二下学期4月期中考试数学试题(已下线)专题03 第七章 随机变量及其分布列--高二期末考点大串讲(人教A版2019)
名校
解题方法
6 . 若数列
的前
项和为
,且
,数列
满足![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b25672127427811525b657c2debd059.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ded63fa6f83bf2343fe8638a35bc0e3c.png)
(1)求数列
的通项公式;
(2)求证:数列
是等比数列;
(3)设数列
满足
,其前
项和为
,若对任意
恒成立,求实数
的取值范围.
![](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/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19bc6092d53f69e7ddc6b00510fa03c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b25672127427811525b657c2debd059.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ded63fa6f83bf2343fe8638a35bc0e3c.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)求证:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e3f946894e21775f9d2b4219ed627eb.png)
(3)设数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8b3c6bf8122b705ecfeb93b543bf93e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d18f91b4f3e748a7dd7ef3a610045b08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
您最近一年使用:0次
2024-04-10更新
|
543次组卷
|
2卷引用:黑龙江省佳木斯市三校2023-2024学年高二下学期4月期中联考数学试题
7 . 对于数列
,定义
为数列
的“加权和”.设数列
的“加权和”
,记数列
的前
项和为
,若
对任意的
恒成立,则实数
的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8194a2e9efd919a7eb8e2c897657b0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93408cf0ab121f0ae9b648159d7aefff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d148b06049672b1fdc5df6c5ef59fd0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edbb0cfb0e5d5b41fdf2bf6787e425c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a37a59558292ad6b3d0978bfd7484990.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2024-03-13更新
|
1301次组卷
|
8卷引用:黑龙江省大庆市实验中学实验二部2023-2024学年高三下学期得分训练数学试卷(二)
黑龙江省大庆市实验中学实验二部2023-2024学年高三下学期得分训练数学试卷(二)2024年河南省普通高中毕业班高考适应性测试数学试题四川省成都市玉林中学2023-2024学年高二下学期3月诊断性评价数学试题(已下线)【讲】 专题6 与数列有关的不等式恒成立问题(已下线)【练】专题10 数列与其它知识的交汇问题(已下线)【讲】 专题3 数列范围(最值)问题(已下线)压轴题05数列压轴题15题型汇总-3(已下线)【人教A版(2019)】高一下学期期末模拟测试A卷
8 .
,
为一个有序实数组,
表示把A中每个-1都变为
,0,每个0都变为
,1,每个1都变为0,1所得到的新的有序实数组,例如:
,则
.定义
,
,若
,
中有
项为1,则
的前
项和为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e30338db4ff3950d5a24365e8774c538.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d7d59920450bb8e514e1322a6448e70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38e3d87be9f706832ef25537d78a201b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbc6a613224461ade69362d46550474.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbc6a613224461ade69362d46550474.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ec0669f6c62fdc8f97b480f5ed47c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b6487d32d7165de1f8e8d3ab0c08a16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9f939918bc9c36dbb32e8e1d7853b18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd8e99a137748fac22a827de8dae1096.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8c418d48e5e63443ef9a1e5d62e8a28.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3cfeacc29e6a61c5b3b4e439c0a91df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/686ece75006ad358f23314dc8a246e11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2d51f9147b8265c0276c1f2c2659197.png)
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2023-10-20更新
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652次组卷
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7卷引用:黑龙江省哈尔滨市第九中学校2023-2024学年高三上学期期中数学试题
黑龙江省哈尔滨市第九中学校2023-2024学年高三上学期期中数学试题广东省2024届高三上学期10月大联考数学试题广东省东莞市东莞外国语学校2024届高三上学期第四次月考数学试题(已下线)第四章 数列(压轴题专练,精选28题)-2023-2024学年高二数学单元速记·巧练(人教A版2019选择性必修第二册)(已下线)专题02 求数列的通项的八种方法(八大题型)-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)(已下线)专题09 数列的通项公式、数列求和及综合应用(练习)-2(已下线)【练】专题4 数列新定义问题
名校
解题方法
9 . 已知为数列
的前
项和,且
,若
,
,
是
的前
项和,求
.
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2024-01-12更新
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2卷引用:黑龙江省海林市朝鲜族中学2023-2024学年高二上学期第三次考试(期末)数学试卷
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解题方法
10 . 已知各项均为正数的数列
的前n项和
,且满足
,
.设
(
非零整数,
),若对任意
,有
恒成立,则
的值是( )
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15a70b95c53fb6655721e2a8c61f5c2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15a70b95c53fb6655721e2a8c61f5c2c.png)
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A.2 | B.1 | C.![]() | D.![]() |
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2024-03-31更新
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6卷引用:黑龙江省哈尔滨师范大学附属中学2022-2023学年高三上学期11月月考数学试题
黑龙江省哈尔滨师范大学附属中学2022-2023学年高三上学期11月月考数学试题黑龙江省绥化市绥棱县第一中学2022-2023学年高三上学期10月月考数学试题(已下线)专题8 数列与不等式恒成立问题(一题多解)(已下线)专题2 奇偶分项 分组并项 练(经典好题母题)(已下线)【练】专题6 与数列有关的不等式恒成立问题辽宁省部分名校2023-2024学年高二下学期5月质检数学试题