名校
1 . 已知
,且
,若
,则
的值可能是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2684b72f9f38f5046c8ecd4280b7b14b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2958030ec9d7543dda1f529593a915e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38e5bd4d82ff79242c05180ee2aa8692.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20d6fc9b90f370fbb27552876b650f8f.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2 . 计算:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a95225112cde9663b715ea786c6aef50.png)
_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a95225112cde9663b715ea786c6aef50.png)
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解题方法
3 . 已知等差数列
的前
项和为
,且
,则当
达到最大值时
的值为___________ .
![](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/9bdfa9bf72ace2c9b2f6439d2625a2b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
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解题方法
4 . 已知
是无穷等比数列,且
,则首项
的取值范围是_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d91f222312ed899c7d4cf77fa593ce93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
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5 . 已知
是互相垂直的单位向量,向量
满足:
是向量
与
夹角的正切值,则数列{bn}是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/997ed8d9597d0369f5ba8d6a096242f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a0995fc73fdd3050150304fe86802d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ff69ede8eff3ae156b55e1abf465279.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f3b81b741fc5c4f680299b5724502e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4a47bdc03f0ced8245c526c81593363.png)
A.单调递增数列且![]() ![]() |
B.单调递减数列且![]() ![]() |
C.单调递增数列且![]() |
D.单调递减数列且 ![]() |
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2022-11-23更新
|
103次组卷
|
3卷引用:上海市控江中学2020-2021学年高二上学期期中数学试题
名校
6 . 若将直线
,
,
(
,
)围成的三角形面积记为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbb708a25d30954a0a50b01d59453bbe.png)
_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0985b973395bcd371cd1e26d3fcd1c36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae9ea8347f7b7bad97221467d83974e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e54caae87f54b5c5b2c293af1f646dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15a70b95c53fb6655721e2a8c61f5c2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0704f453b2de48d36911f7db496bbf82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbb708a25d30954a0a50b01d59453bbe.png)
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2022-11-16更新
|
142次组卷
|
5卷引用:上海市行知中学2018-2019学年高二上学期期中数学试题
上海市行知中学2018-2019学年高二上学期期中数学试题上海市上海交通大学附属中学2020-2021学年高二上学期开学考试数学试题上海市延安中学2020-2021学年高二上学期期中数学试题上海市黄浦区2020-2021学年高二上学期期末数学试题(已下线)专题04 数列(10个考点)【知识梳理+解题方法+专题过关】-2022-2023学年高二数学上学期期中期末考点大串讲(沪教版2020必修第三册+选修一)
7 . 若数列
的通项公式
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6eb2fcf76cd58f6573a059ab1ab48b4.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5aa4d943213b255d6b2dbbdad4182e58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36b98ef143f8159f3a7dafa1fd2f2370.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6eb2fcf76cd58f6573a059ab1ab48b4.png)
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2021-07-18更新
|
182次组卷
|
2卷引用:上海市复旦大学附属中学2020-2021学年高二下学期期末数学试题
真题
名校
8 . 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.![]() |
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2022-04-23更新
|
199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
9 . 在数列
中,
,则数列
的极限为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da6696c6b687f2f67e86c04b81cdb0d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
A.0 | B.![]() | C.0或![]() | D.不存在 |
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10 . 计算:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b819cba1ad7aac12ec4784d99eadba94.png)
_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b819cba1ad7aac12ec4784d99eadba94.png)
您最近一年使用:0次