解题方法
1 . 已知数列
是斐波那契数列,其数值为:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a4fb1a2d1cb1152ef78d7332d45b681.png)
.这一数列以如下递推的方法定义:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/642c7410a3134bed37df637e8d382c88.png)
.数列
对于确定的正整数
,若存在正整数
使得
成立,则称数列
为“
阶可分拆数列”.
(1)已知数列
满足![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c9e8b08ba803f851cf12404e742775.png)
.判断是否对
,总存在确定的正整数
,使得数列
为“
阶可分拆数列”,并说明理由.
(2)设数列
的前
项和为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75541174a021adfd2e3356ca2ad56f7b.png)
,
(i)若数列
为“
阶可分拆数列”,求出符合条件的实数
的值;
(ii)在(i)问的前提下,若数列
满足
,
,其前
项和为
.证明:当
且
时,
成立.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a4fb1a2d1cb1152ef78d7332d45b681.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc50612eece655796b752da6b4bc3f3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/642c7410a3134bed37df637e8d382c88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d74fa7fa6330976d7eb8e523a62cd09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f329b217e1051b23f0d61023cdc6e69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cdfd9c3f8933cddb63d87dbe2812994.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f329b217e1051b23f0d61023cdc6e69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(1)已知数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5ab0309e2cd35585ea9fb2cc3017abf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c9e8b08ba803f851cf12404e742775.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/753358ca020523f27725f5187bb8e988.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/136a003907c455bfd58875c96c138772.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5ab0309e2cd35585ea9fb2cc3017abf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(2)设数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d813f3ca8db41a4db6c18eac30fef98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75541174a021adfd2e3356ca2ad56f7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79282bbe9f6408297d6378878c423bec.png)
(i)若数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d813f3ca8db41a4db6c18eac30fef98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(ii)在(i)问的前提下,若数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca5f894d605847c6df0c4df24cf8e1fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69a340cb0e3c456ec64ffdf89d7cd6ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09881de0dc186bbcd1e60eb00159ee97.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/09881de0dc186bbcd1e60eb00159ee97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bcfc48f9bc23cc43085bdb910e7a136.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e48268fd6d3f92032eb54fbf65c01405.png)
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解题方法
2 . 已知数列
满足
,且
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82b0c276b0142c7b279e54a47529cc23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91ced564150c49c1afbe3e23cbd540ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/686e234c0cb9d794feb6e5adedd1f300.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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名校
解题方法
3 . 已知数列
的前
项和为
.
(1)求
的通项公式;
(2)若
,求数列
的前
项和
.
![](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/936ed4471f99f69b18157e927f40eec2.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/216876de04325fd250c38c485cbc34b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f329b217e1051b23f0d61023cdc6e69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
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昨日更新
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1015次组卷
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3卷引用:辽宁省部分高中2023-2024学年高二下学期期中考试数学试题
4 . 已知数列
中各项均为正数,且
,给出下列四个结论:
①对任意的
,都有![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0515775e751e33b3df49f5ee93c6792.png)
②数列
可能为常数列
③若
,则当
时,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c6d5bc22be6388e3a0c79701c5fe56f.png)
④若
,则数列
为递减数列.
其中正确结论有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d0dfc31b1b5b7f65cc7da953aae130b.png)
①对任意的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/930bc56406e69b785b37a83d48e36724.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0515775e751e33b3df49f5ee93c6792.png)
②数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a40af859d892e1c30f300678e4a05c0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0704f453b2de48d36911f7db496bbf82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c6d5bc22be6388e3a0c79701c5fe56f.png)
④若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/492b4cec252b0417cbec8e361718001d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
其中正确结论有( )
A.1 | B.2 | C.3 | D.4 |
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5 . 数列
称为斐波那契数列,该数列是由意大利数学家莱昂纳多・斐波那契(Leonardo Fibonacci)以兔子繁殖为例子而引入,故又称为“兔子数列”,
满足
,则数55是该数列的第__________ 项;
是斐波那契数列的第__________ 项.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f4aeac126a58dc87e0ab50e5f817bed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0d1c3528d70957e2f80aecd6d9d2334.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f4b291192a27a2a49075931fb9bba06.png)
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6 . 记数列
的前
项和为
,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e3f7eb839ec76eec4bafd3f1658a27d.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/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f00395d6848e19e27f7eae798234dcd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e3f7eb839ec76eec4bafd3f1658a27d.png)
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解题方法
7 . 短视频已成为当下宣传的重要手段,东北某著名景点利用短视频宣传增加旅游热度,为调查某天南北方游客来此景点旅游是否与收看短视频有关,该景点对当天前来旅游的500名游客调查得知,南方游客有300人,因收看短视频而来的280名游客中南方游客有200人.
(1)依据调查数据完成如下列联表,根据小概率值
的独立性检验,分析南北方游客来此景点旅游是否与收看短视颍有关联:单位:人
(2)为了增加游客的旅游乐趣,该景点设置一款5人传球游戏,每个人得到球后都等可能地传给其余4人之一,现有甲、乙等5人参加此游戏,球首先由甲传出.
(i)求经过
次传递后球回到甲的概率;
(ii)记前
次传递中球传到乙的次数为
,求
的数学期望.
参考公式:
,其中
;![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb95a9c95da5e03d680ac7bc601120c0.png)
附表:
(1)依据调查数据完成如下列联表,根据小概率值
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83caa0ad94044a1e206b1cc0b3f85080.png)
游客 | 短视频 | 合计 | |
收看 | 未看 | ||
南方游客 | |||
北方游客 | |||
合计 |
(i)求经过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c05b9832b09731a574d4a4adf7448de.png)
(ii)记前
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
参考公式:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f503f0dec4cf2cc95ad9521c5eaf9f18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/356b05e46b10ee51c3e43546d73ec96c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb95a9c95da5e03d680ac7bc601120c0.png)
附表:
![]() | 0.1 | 0.05 | 0.01 | 0.005 | 0.001 |
![]() | 2.706 | 3.841 | 6.635 | 7.879 | 10.828 |
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解题方法
8 . 记
为数列
的前
项和,
为数列
的前
项积,
,已知
,且
,则下列说法正确的是( )
![](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/f1ae9a3b0b7aeb1545b65d91aa371b3c.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/a37a59558292ad6b3d0978bfd7484990.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/211e91c109e0b3c53886485f9701e504.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/988de1035a81e488e2df8a8e25543a89.png)
A.数列![]() | B.![]() | C.![]() | D.当![]() ![]() |
您最近一年使用:0次
2024-04-28更新
|
507次组卷
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5卷引用:河南省青桐鸣联考2023-2024学年高二下学期3月月考数学试题
河南省青桐鸣联考2023-2024学年高二下学期3月月考数学试题河南省青桐鸣联考2023-2024学年高二下学期3月月考数学试题(北师大版)(已下线)北师大版本模块五 专题3 全真能力模拟3(高二期中)(已下线)模块五 专题6 全真拔高模拟6(人教B版高二期中研习)(已下线)第19题 递推数列求通项,模型思想是主线(优质好题一题多解)
解题方法
9 . 若数列
的项
的最大奇因数为
,则
叫做
的“滤净数列”.已知数列
满足
是
的滤净数列.
(1)求
的通项公式及
的值;
(2)若
,求
的前
项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3cfeacc29e6a61c5b3b4e439c0a91df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/621604766ddd141c86e37da5e71aef26.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/39a0c8aadb625077291084aa12f84c09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1584461988bf6fbfef8be64226255c3.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88252e8d8eb03422273cea5067de02bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ed900c88cf1ca707255cd73398f6321.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3076ec6b824db9b9b8b2857219eee0e9.png)
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2024-04-25更新
|
275次组卷
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3卷引用:河南省青桐鸣联考2023-2024学年高二下学期3月月考数学试题
10 . (多选)若正整数数列:
,
,…,
(
)满足:若对任意的正整数k(
),都有
,则称该数列为“
数列”.下列关于“
数列”的说法中正确的有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e88093a749c0d46e0ee931ecfaff925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bcfc48f9bc23cc43085bdb910e7a136.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51502a5f4107db67ec1f1b3fa4a4244f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/920423f1a05fab3a52daf0f3e9e05a92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d74e404acda97bd030102c6e6ce2804.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d74e404acda97bd030102c6e6ce2804.png)
A.若数列8,x,4,y,8为“![]() ![]() |
B.若数列1,m,n,8为“![]() ![]() |
C.若数列![]() ![]() ![]() ![]() ![]() ![]() |
D.若数列![]() ![]() ![]() ![]() ![]() ![]() ![]() |
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