名校
1 . 已知等差数列
的首项为
,公差为
;等比数列
的首项为
,公比为
,其中
均为正整数,且
,若存在关系式
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ccd4162c7d09f970cb77cadacdbe521.png)
_____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/543150ec61b3177fbb45b7e1d9800765.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f287a417489ce003a9f8e8f7902ae6c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ccd4162c7d09f970cb77cadacdbe521.png)
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2 . 设
是公比为
的等比数列,首项
,对于
,当且仅当
时,数列
的前
项和取得最大值,则
的取值范围为_____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa08a089a48737b6a0c47cd150b9f12a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daf8cadc870b9b43ab43e96aaefa1e9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fac3649308b528fd56545ba102dc42d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
您最近一年使用:0次
2020-01-16更新
|
210次组卷
|
3卷引用:上海市七宝中学2017-2018学年高二上学期开学考试数学试题
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3 . 已知等差数列
中,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e45f4fdc859dbc3c62b5f7006a8fa35a.png)
__________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9745c987a51ed4ba779b60ba5925d58c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e45f4fdc859dbc3c62b5f7006a8fa35a.png)
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4 . 已知函数
,各项均不相等的数列
满足
,记
.①若
,则
;②若
是等差数列,且
,则
对
恒成立.关于上述两个命题,真命题的个数为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa7f9b35017daa8b524c5717a355834a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7791355d06b49550fb42510840e3921.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d781392baa5d0de039e8a2283c09e8d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee9c808aa74de39cd029cc58d6fd8498.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0421c48dff70b078dc2aca447f053f61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fa3fd7269156552b3d0976b1e8dc5d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ae0a0b8fa6b4731d99e02219d02f37b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f093c61867ee4ce75f951d46b9b123.png)
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5 . 计算 ![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdbaf016617bd42d4c453ba24ce07154.png)
__________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdbaf016617bd42d4c453ba24ce07154.png)
您最近一年使用:0次
2020-02-02更新
|
161次组卷
|
3卷引用:上海市七宝中学2021届高三下学期开学考试数学试题
名校
6 . 等差数列
前
项和为
,已知
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38bc224f26def87bc39de019ad1d2eb5.png)
_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.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/d8b18cf2bfa90a5beef4cf3dca81fdd4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26708de4e6e66ed074d953fdf4988e02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38bc224f26def87bc39de019ad1d2eb5.png)
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2019-07-08更新
|
288次组卷
|
2卷引用:上海市闵行区七宝中学2018-2019学年高一下学期期末数学试题
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7 . 记等差数列{an}的前n项和为Sn,若![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b943fc1f0c7b85edc5cddee33483360f.png)
,且A、B、C三点共线(该直线不过原点O),则S200=_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b943fc1f0c7b85edc5cddee33483360f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/743e74e9c52d1e732a260c685f11c309.png)
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2016-12-04更新
|
921次组卷
|
8卷引用:上海市七宝中学2020-2021学年高二上学期10月月考数学试题
上海市七宝中学2020-2021学年高二上学期10月月考数学试题2015-2016学年湖北省黄冈中学高二上第一次周测数学试卷上海市上海理工大附中2015-2016学年高二上学期第二次月考数学试题上海市曹杨二中2016-2017学年高二上学期开学摸底考试数学试题(已下线)第13讲 向量的应用(讲义)-【教育机构专用】2021年春季高一数学辅导讲义(沪教版2020必修第二册)(已下线)专题四 等差数列的前n项和-2020-2021学年高中数学专题题型精讲精练(2019人教B版选择性必修第三册)(已下线)5.2.2 等差数列的前n项和(课后作业)-2020-2021学年高中数学同步备课学案(2019人教B版选择性必修第三册)陕西省铜川市耀州中学2021-2022学年高二上学期第一次月考数学试题
名校
解题方法
8 . 已知向量序列
,满足如下条件:
,
,
,且
,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd707b69a11f8de5566f23c1a2a9ff5a.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8a6d63444fb80d9396449ed5fb1cad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa92ce097380a3a74ad3929547ece02e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d964862471c4591392649faed628a58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d27efcb6fc5ee2924b5bb7dcf35ba87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a7911d0af2d752b63c80f7cbe42454c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27ed6efb190d077e837a50d231d57b9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd707b69a11f8de5566f23c1a2a9ff5a.png)
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9 . 已知数列
满足
,且
,
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bf9ee81d38182ecd57b0777f910aa65.png)
___________ .(结果用含a的式子表示)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f03b007be99a17613246b5ea1ff86d75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e39a28754dce79f732da5f5585a86ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/739999abba91227d93267602e0ebe9f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bf9ee81d38182ecd57b0777f910aa65.png)
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10 . 等差数列
的前
项和为
,已知
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dec6439c99c6a996a48b7d9e57c21208.png)
________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.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/44157cabd4062343d335fb5ddc7da4b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c3576f1f2ca529a56290dccee7427d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dec6439c99c6a996a48b7d9e57c21208.png)
您最近一年使用:0次
2017-11-16更新
|
512次组卷
|
4卷引用:上海市七宝中学2017届高三上学期10月月考数学试题