1 . 已知数列
(
)满足
,且
,则通项公式![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3f7fda69e2b32b9ced2239f915fa59b.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea4ac187cbb465180e89f38250b3970.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ace27d1062e3d40b0e667dbbd43e34d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3f7fda69e2b32b9ced2239f915fa59b.png)
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解题方法
2 . 各项均为不为零的数列
,前n项和为
,向量
,下列命题中真命题是( )
![](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/0251a44c519de0cbbdaca2fa561ba609.png)
A.若![]() ![]() | B.若![]() ![]() |
C.若![]() ![]() | D.若![]() ![]() |
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解题方法
3 . 已知数列
满足
,其前
项和是
,对任意正整数
,
,求此数列的通项公式.
![](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/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48dbf04a571772b43a96c95af443326c.png)
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4 . 数列
满足
,前
项和
,对任意
成立,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6ebf5fca7fb593fee014e1fda7a2924.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ad82415e7c5276c5188e51cdf434ccc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05fca2102e6c392167bfde6dc0c2242d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e145b6046bc80d0ffecc61ac67c87ca1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6ebf5fca7fb593fee014e1fda7a2924.png)
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5 . 已知各项不为零的数列
的前
项和为
,且
,
(
)
(1)求证:数列
是等差数列;
(2)设数列
满足:
,且
,求正整数
的值;
(3)若
、
均为正整数,且
,
,在数列
中,
,
,求
.
![](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/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d075918658b33e348130f722af5e5239.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea4ac187cbb465180e89f38250b3970.png)
(1)求证:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)设数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/053de6e9823b1ac293fc0511a4c67e22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/213a05cc4ec6273704b843a6e65881ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72ac49ab7c8001c209b8611b9ea40d85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfae43a1ea1f5f3a031d224ac61a5f37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce4159b10615a3bafbf9f36e6f19fc99.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50e1ee88beaddafb0d0a185c3a8e0dc5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08f3e34741f1fe21a08625a79ccd0ec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50874c98736eb028929f898913ed4e44.png)
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2020-02-02更新
|
491次组卷
|
5卷引用:2016届上海市普陀区高三下学期质量调研(文理合卷)数学试题
名校
6 . 将数列
中的所有项按第一行排3项,以下每一行比上一行多一项的规则排成如下数表:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20488a7619e4a50625983b83e38575df.png)
……
记表中的第一列数
,
,
,…,构成数列
.
(1)设
,求m的值;
(2)若
,对于任何
,都有
,且
.求数列
的通项公式.
(3)对于(2)中的数列
,若上表中每一行的数按从左到右的顺序均构成公比为q(
)的等比数列,且
,求上表中第k(
)行所有项的和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20488a7619e4a50625983b83e38575df.png)
……
记表中的第一列数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daf464629fa321a6ff7401ab79f07083.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7da2f386b78cdf6489efaa2f5820d3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed40f06a45869a06a3dc33a55f096ca7.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59dd6c97d2ee3e74ba5730f1cbcc1d43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36b98ef143f8159f3a7dafa1fd2f2370.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af0dd3fb6af23def773e1b0032a4f3c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e147de39d53b9d4b00afa46672ef980.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(3)对于(2)中的数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f71acdb04454c77e1e25ad4f336cccfe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/194480253da4a3747297bce4d4a63f7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46b6d151d3f864bae873987f6db9327a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8bfd47b7c68564110c720e9246a02ff.png)
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7 . 定义:如果一个向量列从第二项起,每一项与它的前一项的差都等于同一个常向量,那么这个向量列叫做等差向量列,这个常向量叫做等差向量列的公差.已知向量列
是以
为首项,公差
的等差向量列.若向量
与非零向量
)垂直,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c15383d0da814f57f7c33c8f9f92a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e491244c0db1131c34d4c8087b123557.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1aa7c52d75c05914f077dcf567c36178.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1522e062601bd8cbf0e1dfb46dc99479.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83c4a835a24e3d37191a3dad495deb2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c98a3d8c22d9127c3d08071709bbb08b.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2019-12-16更新
|
469次组卷
|
4卷引用:上海市宝山区2017-2018学年高二下学期期末数学试题
上海市宝山区2017-2018学年高二下学期期末数学试题上海市洋泾中学2017-2018学年高三上学期期中数学试题上海市大同中学2016届高三上学期期中(文理)数学试题(已下线)专题16 数列新定义题的解法 微点2 数列新定义题的解法(二)
8 . 数列
中,已知
,
,则通项
等于( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/039e4fe671d61e59b96ee525c9df43e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7274ce4a71b1a244215c036f43f6eff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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9 . 已知数列
的递推公式为
则通项公式![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3f7fda69e2b32b9ced2239f915fa59b.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21a16ebaa06fff625bfaa4feba5b84e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3f7fda69e2b32b9ced2239f915fa59b.png)
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10 .
是定义在正整数集上的函数,且满足
和
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b10245e4ed5190df1ed65e32354033a.png)
_________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cce7543aa1a1bf8b9950d562f3b8a3ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a10c846d2c17173e0f44302b27c000c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b10245e4ed5190df1ed65e32354033a.png)
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