名校
解题方法
1 . 已知等差数列
的前和为
,若
,
,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
_______
![](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/039e4fe671d61e59b96ee525c9df43e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48c4dfd03461b477344781b866e3fdac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6858b87af2a83a7698a276772f6e7bfb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
您最近一年使用:0次
2021-11-23更新
|
696次组卷
|
2卷引用:上海市七宝中学2022届高三上学期期中数学试题
解题方法
2 . 已知等差数列
,
,
,…, 若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f3cb8d72bb2e281b943b3b430138ef7.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbc6a613224461ade69362d46550474.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81fb134b2b48acc99213fff6ccfee65f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d13ce3ebd1112220c639562739f1f9d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/730da95cbce9628ab85d9bc270f4f033.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f3cb8d72bb2e281b943b3b430138ef7.png)
您最近一年使用:0次
解题方法
3 . 已知等差数列
的前n项和为
,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cd161bac5a44ece28d3c6bb6b68cbd1.png)
___________ .
![](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/dbe1c0d45ec47479f7721b69c793cd56.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cd161bac5a44ece28d3c6bb6b68cbd1.png)
您最近一年使用:0次
名校
4 . 若无穷数列
满足:
,当
,
时.
(其中
表示
,
,…,
中的最大项),有以下结论:
①若数列
是常数列,则
;
②若数列
是公差
的等差数列,则
;
③若数列
是公比为
的等比数列,则
;
④若存在正整数
,对任意
,都有
,则
是数列
的最大项.
则其中正确的结论是_____ (写出所有正确结论的序号)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3068733ef2ceda9f1620d5c9bcdfa542.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea4ac187cbb465180e89f38250b3970.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0704f453b2de48d36911f7db496bbf82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/333c77d78bdd083d1f8b7f010d05b740.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37715f49f9302c190225c4fe7bbd47ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e88093a749c0d46e0ee931ecfaff925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7230de53663c75658c58bbf206a0085.png)
①若数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c60de05900c8d51f2cf77e5e496d93e.png)
②若数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/812be9806122241c476ba1db516c4823.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2d8bbb4a09e0ac86bbae46222a90841.png)
③若数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eda6dc559d07bc22c9a0ed1e3a6d01d2.png)
④若存在正整数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea4ac187cbb465180e89f38250b3970.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b2b94cbf8f1acc77ed2618d9ba5756a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
则其中正确的结论是
您最近一年使用:0次
2019-04-18更新
|
1211次组卷
|
5卷引用:2019年上海市闵行区高三上学期期末质量调研数学试题
(已下线)2019年上海市闵行区高三上学期期末质量调研数学试题【校级联考】江苏省泰州中学等2019届高三第二学期联合调研测试数学试题江苏省泰州中学、宜兴中学等校2019届高三4月联考数学试题(含附加题)【校级联考】江苏省高三泰州中学、宜兴中学、梁丰2019届高三第二学期联合调研测试数学试题(已下线)专题6.5 数列的综合应用(练)【理】-《2020年高考一轮复习讲练测》
名校
5 . 在共有2023项的等比数列
中,有等式
成立,类比上述性质,在共有2023项的等差数列
中,相应的有等式______ 成立.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80eae440bc359521b680637e9401b797.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
您最近一年使用:0次
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6 . 已知数列
前
项和
,则该数列的通项公式![](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/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30c17d419ca0e12a4b0bc982e1fbd3e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3f7fda69e2b32b9ced2239f915fa59b.png)
您最近一年使用:0次
2019-06-12更新
|
1024次组卷
|
4卷引用:上海市七宝中学2017-2018学年高一下学期期末数学试题
7 . 用
表示不超过x的最大整数,如
,
.如果定义数列
的通项公式为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a07d5727c6b244e3f84f830bcf9f457.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c4f5908d6a1217e493ed7586b6964dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3810aa0c27d668bc7803c9692372ab5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30081d6abb019fd7bdb66781d56c50fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e976c0663fa749ca749f99842d21ca03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/882ec6b671226444d35693340aa82ea4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a07d5727c6b244e3f84f830bcf9f457.png)
您最近一年使用:0次
名校
解题方法
8 . 数列
中,
表示与
最接近的整数,则满足
的正整数n的最小取值为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38123d52b295071c2f6cfe5097ff8740.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d249094ecb996458e35182d6b461299.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8050b9b527f4a35a67129b049c857367.png)
您最近一年使用:0次
2021-10-05更新
|
429次组卷
|
3卷引用:上海市七宝中学2022届高三上学期期中数学试题
上海市七宝中学2022届高三上学期期中数学试题重庆市西南大学附属中学2021届高三下学期第五次月考数学试题(已下线)专题09 数列(选择题、填空题)-备战2022年高考数学(文)母题题源解密(全国甲卷)
9 . 已知等差数列
的通项公式为
,则公差![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99a4658ab94306d39aedda17deed7216.png)
_______________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34c0e966db2d11c9dba1454ac6fcb8e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99a4658ab94306d39aedda17deed7216.png)
您最近一年使用:0次
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10 . 已知数列
为等差数列,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dbd9ff686703cad03aa383e5fec21.png)
_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/288d35537eeacd57b57690f14541e6e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dbd9ff686703cad03aa383e5fec21.png)
您最近一年使用:0次