1 . 中国古代科学家发明了一种三级漏壶记录时间,壶形都为正四棱台,自上而下,三个漏壶的上底宽依次递减1寸(约3.3厘米),下底宽和深度也依次递减1寸.设三个漏壶的侧面与底面所成的锐二面角依次为
,
,
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25f64fa38725c136504f723019a18dc5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e93fa313adc4ac7608ba9449fd755212.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e8d4017e1a37acb0c8e00508be472b2.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2 . 若数列
、
均为严格增数列,且对任意正整数n,都存在正整数m,使得
,则称数列
为数列
的“M数列”.已知数列
的前n项和为
,则下列结论中正确的是________ .
①存在等差数列
,使得
是
的“M数列”
②存在等比数列
,使得
是
的“M数列”
③存在等差数列
,使得
是
的“M数列”
④存在等比数列
,使得
是
的“M数列”
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fce83115a50f99e08e9a2db7267aeed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38ef4c4439b36c2847b0056a116d56d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdf49ec5ab0efb3c5dd2fe780e28e85f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fce83115a50f99e08e9a2db7267aeed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38ef4c4439b36c2847b0056a116d56d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
①存在等差数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cce224c28ca451c4f105dc3b077736cb.png)
②存在等比数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cce224c28ca451c4f105dc3b077736cb.png)
③存在等差数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cce224c28ca451c4f105dc3b077736cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
④存在等比数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cce224c28ca451c4f105dc3b077736cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
您最近一年使用:0次
真题
3 . 设
与
是两个不同的无穷数列,且都不是常数列.记集合
,给出下列4个结论:
①若
与
均为等差数列,则M中最多有1个元素;
②若
与
均为等比数列,则M中最多有2个元素;
③若
为等差数列,
为等比数列,则M中最多有3个元素;
④若
为递增数列,
为递减数列,则M中最多有1个元素.
其中正确结论的序号是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f329b217e1051b23f0d61023cdc6e69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a87d1659c66dd3286ae75a2603babbb3.png)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f329b217e1051b23f0d61023cdc6e69.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f329b217e1051b23f0d61023cdc6e69.png)
③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f329b217e1051b23f0d61023cdc6e69.png)
④若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f329b217e1051b23f0d61023cdc6e69.png)
其中正确结论的序号是
您最近一年使用:0次
名校
解题方法
4 .
为公差不为零的等差数列,
是其前
项和,
是等比数列,
是其前
项和,则下列说法正确的是( )
![](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/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
A.对任意![]() ![]() ![]() ![]() |
B.存在![]() ![]() ![]() ![]() |
C.对任意![]() ![]() ![]() ![]() |
D.存在![]() ![]() ![]() ![]() |
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名校
解题方法
5 . 记等差数列
的公差为
,前
项和为
,若
,且
,则该数列的公差
为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.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/0038e38f35c6eb481ea8bdc02afb3f4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/949e8d804ee2977b9a918455d27eb2c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
A.3 | B.4 | C.5 | D.6 |
您最近一年使用:0次
6 . 设正整数
,
,
,这里
. 若
,且
,则称
具有性质
.
(1)当
时,若
具有性质
,且
,
,
,令
,写出
的所有可能值;
(2)若
具有性质
:
①求证:
;
②求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0704f453b2de48d36911f7db496bbf82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25c53838698bdce4bdfcddb756b60f52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b30f859c1ac6d40ecd3660efd6639b25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12b0e3b00fe47801afb53ec56706c21a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cef463abd621083c32b0a43fd95373ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14fb04e3704e9e0bc2a610815f29f09f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/252bab154aa5bdc9b4bce4c0d43aaf73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be604061cf1591f7069472269d4c9719.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6fa157b4f65f3a9aa1f7f82de02e99e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c9b6e51986fe5d7a7265e0e93adcb4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ced4e381e8c3336848b8c436dbc584f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6831ec7292bd1e0fc7e21efb4d82357b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/252bab154aa5bdc9b4bce4c0d43aaf73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
①求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9171aebb446d064b05a8c9513b77713.png)
②求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dbb2d69dacbf149f01a3e98b33f8e01.png)
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解题方法
7 . 设等差数列的前n项和为
,若
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70cb7b6d14630288595af4d9ad841312.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf8c4060c7a614a2f287e9fa8fd9f627.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f048ea72b8ab7b6f62bf6fb0810fe903.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/091c879bd7389227643d6f8c5eb4af4d.png)
A.60 | B.80 | C.90 | D.100 |
您最近一年使用:0次
8 . 已知等差数列
的前
项和为
,则“
”是“
”的( )
![](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/d9af5783b85caabe061d2ca6232be2aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/744b5f5c09246fe3a618539b313aa4c5.png)
A.充分不必要条件 | B.必要不充分条件 |
C.充分必要条件 | D.既不充分也不必要条件 |
您最近一年使用:0次
解题方法
9 . 将数列
中项数为平方数的项依次选出构成数列
,此时数列
中剩下的项构成数列
;再将数列
中项数为平方数的项依次选出构成数列
,剩下的项构成数列
;….如此操作下去,将数列
中项数为平方数的项依次选出构成数列
,剩下的项构成数列
.
(1)分别写出数列
的前2项;
(2)记数列
的第
项为
.求证:当
时,
;
(3)若
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa6eeca9796e257f38d63258509d1048.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dab7a9ae961c733c48bc5782d9e1ed59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4ccd4537f4dee2050ade38b972eb9b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e23e6ef7192b7390f5128911f2eddc1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7688363f5ffff23a6193c7a8eee501c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e194d06db1129edf38b94579d9f4889f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5815cc29f60d2aa538c4dd30e0803a4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faf764059194422cdfdf522917671a79.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7f2c72ab559a0615db4c51327b78d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70dd57541d525ff3cfe31ca52d0071ec.png)
(1)分别写出数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bfefd19874aeff8340735b3df468333.png)
(2)记数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a0d7559d8dfa8236ca9d4b1853fbdec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e058f4325169eafcc30081eaf45327a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0704f453b2de48d36911f7db496bbf82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b181461be9ae04c27783ed29e739f904.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af3c19f96faf4fbf3b0d5e712f609ebf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/280860dd039e1305a5ccc455f63e8223.png)
您最近一年使用:0次
名校
解题方法
10 . 在数列
中,
.数列
满足
.若
是公差为1的等差数列,则
的通项公式为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/414187fca31df508dbf88d7f2bb83662.png)
______ ,
的最小值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89cad0277bcfe95cab3566f006f27e18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f329b217e1051b23f0d61023cdc6e69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22b0846a189bd8414b09fc96282379cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f329b217e1051b23f0d61023cdc6e69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f329b217e1051b23f0d61023cdc6e69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/414187fca31df508dbf88d7f2bb83662.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
您最近一年使用:0次
2024-05-04更新
|
953次组卷
|
2卷引用:北京市西城区2024届高三下学期4月统一测试数学试卷