1 . ![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e3a380b24e515fb3ab5169b1770f042.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e3a380b24e515fb3ab5169b1770f042.png)
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2 . 已知
为等差数列,且
,
,
表示
的前
项和.
(1)
的公差![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c98c59cd4749afdd21e73529fc84323.png)
___________ .
(2)使得
达到最大值的![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f3cb8d72bb2e281b943b3b430138ef7.png)
___________ .
(3)设
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36e3d89dee04f974e1e9af75a14702fb.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44536dcfaeac012d405a10e4dc9b5e4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a54f77a880e638c90ea0cdb80ecebbd.png)
![](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)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c98c59cd4749afdd21e73529fc84323.png)
(2)使得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f3cb8d72bb2e281b943b3b430138ef7.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95e191086446263b7bbbd93613577c42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36e3d89dee04f974e1e9af75a14702fb.png)
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3 . 计算![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afdb164ae3bf7ccc8c8dd52cb766e011.png)
_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afdb164ae3bf7ccc8c8dd52cb766e011.png)
您最近一年使用:0次
2022-04-28更新
|
95次组卷
|
2卷引用:上海市奉贤区致远高级中学2021-2022学年高二下学期期中在线教学评估数学试题
名校
4 . 设函数
的图像与
的图像交点的横坐标从小到大依次记为
,
,
,…,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5467aaf403558d2c8af7c7e60221fc39.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/104bff3630b2cc0dd368a213f2a35fe3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28c074aa8c1cc7a2b72bb0ad903bd22f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/291c25fc6a69d6d0ccfb8d839b9b4462.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5467aaf403558d2c8af7c7e60221fc39.png)
您最近一年使用:0次
名校
5 . ![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2aa17048efdbd9153c95871854ce01ef.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2aa17048efdbd9153c95871854ce01ef.png)
您最近一年使用:0次
解题方法
6 . 已知
是等比数列,
,公比
,若
.
(1)求k的值;
(2)设
是
的前n项和,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90317672df8cb902a3344004f0f916c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36e3fc803117ae94861839984a0afef4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e82fc0397dbfde6611cd52abb102b01a.png)
(1)求k的值;
(2)设
![](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/27f90c472b3cbcd1da548cad9db5455c.png)
您最近一年使用:0次
真题
名校
7 . 若数列
的通项公式是
,前n项和为
,则
等于( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7636db903029f8b3e997054d3e6a16d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27f90c472b3cbcd1da548cad9db5455c.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2022-04-23更新
|
203次组卷
|
6卷引用:上海市黄埔区大境中学2018-2019学年高二上学期期末数学试题
名校
8 . 下面四个命题中:
(1)若
是等差数列,则
极限不存在;
(2)已知
,当
时,数列
的极限为1或-1;
(3)已知
,则
;
(4)若
,则
,数列
的极限是0;
(5)若
存在,则
的取值范围为
;
(6)若等比数列
的各项和存在,则
.
其中真命题个数为( )
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ec7510dc49bea69b5961573297f1289.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19893fdb67307d35a9115ef4f3f1202a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(3)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b103b72c9013ce09ee987c6a7540c0ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9be609302ce8bdfb1b3a91aaadf1c25.png)
(4)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e57d2228252838ca0747e8ef7fa59ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d80e8a674972bdbcc9f85835319b1445.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(5)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb0b45c8ebb4ef6648603c3dad077ebd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14f45aaf3c60f7dc00774e8f9ac3d8b1.png)
(6)若等比数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c65ab13c42b4866d8e6035a9bc76326.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047056c99b39c70fa40d3c8178e5b631.png)
其中真命题个数为( )
A.1 | B.2 | C.3 | D.4 |
您最近一年使用:0次
9 . ![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da6b25820fc52f98c05452e002dcd1ed.png)
_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da6b25820fc52f98c05452e002dcd1ed.png)
您最近一年使用:0次