名校
1 . 已知正项等比数列
的前
项和为
,若
成等差数列,则
的最小值为___________ .
![](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/b321328facd28717a23e2cec06b20eb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4740344514cb6f1de52d3a2d8c3ee087.png)
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2 . 设
为等差数列
的前
项和,且
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cd228d062d4085e949535cc73bae014.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)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8657a9f3eec0c1b0efa818f778129e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdba8a48eec7c0b90e22fa478d8f0ca0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cd228d062d4085e949535cc73bae014.png)
您最近一年使用:0次
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3 . 在等差数列
中,其前
项和为
,已知
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4462061849841442375508b195ca26df.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/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86c7cef22e6e75c4989057b36bdc83ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/039ede15004ad4c8095fa60b4a95ed13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4462061849841442375508b195ca26df.png)
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4 . 等差数列
中,其前
项和为100,其前
项和为500,则其前
项和为______ .
![](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/e2d51f9147b8265c0276c1f2c2659197.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43f41be870e84c819362787849770519.png)
您最近一年使用:0次
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解题方法
5 . 已知等差数列
的前
项和为
,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8fc16a789f1e683126684c09ceee665.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/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71afe5572f67433ecb05a06e619f527a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8fc16a789f1e683126684c09ceee665.png)
您最近一年使用:0次
2024-01-05更新
|
620次组卷
|
4卷引用:河北省邢台市部分重点高中2023-2024学年高二上学期1月期末数学试题
河北省邢台市部分重点高中2023-2024学年高二上学期1月期末数学试题(已下线)5.2.2 等差数列的前n项和(3知识点+8题型+强化训练)-【帮课堂】2023-2024学年高二数学同步学与练(人教B版2019选择性必修第三册)(已下线)4.2.2 等差数列的前n项和公式——课后作业(提升版)(已下线)专题03数列期末7种常考题型归类【好题汇编】-备战2023-2024学年高二数学下学期期末真题分类汇编(人教B版2019选择性必修第三册)
名校
6 . 已知等差数列
的前
项和为
,且
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b11e2bf8d65c24fc845446a32d881bd4.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/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/324d31240d78db81bdc242e26cca35f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16cf7ac5fc88681c4e327b733d407435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b11e2bf8d65c24fc845446a32d881bd4.png)
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2023-11-03更新
|
764次组卷
|
3卷引用:甘肃省酒泉市2023-2024学年高三上学期10月联考数学试题
2023高三·全国·专题练习
解题方法
7 . 设
是等差数列
的前
项和,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06fbdd2e3efbef1ff014df55b242eced.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.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/8de291e718e2833a60c28a8094d01410.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9781c4691ef3b6c056da2673c86c51bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06fbdd2e3efbef1ff014df55b242eced.png)
您最近一年使用:0次
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8 . 张大爷为了锻炼身体,每天坚持步行,用支付宝APP记录每天的运动步数.在11月的30天中,张大爷每天的运动步数都比前一天多相同的步数,经过统计发现前10天的运动步数是6.9万步,前20天的运动步数是15.8万步,则张大爷在11月的运动步数是_________ 万步.
您最近一年使用:0次
2023-04-04更新
|
334次组卷
|
7卷引用:山东省菏泽市鄄城县第一中学2022-2023学年高二上学期期末数学试题
山东省菏泽市鄄城县第一中学2022-2023学年高二上学期期末数学试题吉林省白城市通榆县2022-2023学年高二上学期期末数学试题河南省洛阳市强基联盟2022-2023学年高二下学期3月月考数学试题广东省珠海市斗门区第一中学2022-2023学年高二下学期期中数学试题湖北省鄂东南三校2022-2023学年高二下学期3月联考数学试题(已下线)江苏省南京市六校联合体2023-2024学年高三上学期11月期中数学试题变式题15-18(已下线)4.2 等差数列(3)
9 . 已知等差数列
的前
项和为
,若数列
的前
项和为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5c81c886e0a331a1ad7f390d221e167.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/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb73df7e56940c99f07f8c1f44b701d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c906299628797ad0dc8e662992b56e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5c81c886e0a331a1ad7f390d221e167.png)
您最近一年使用:0次
名校
10 . 已知
是等差数列
的前n项和,若
,
,则
=______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa561fcad46eaf8d841efa58fe9a8af2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49889abfa24edb862e45a44329a904f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32e096395cf359ca14d80bef3ea199ba.png)
您最近一年使用:0次
2022-12-01更新
|
1221次组卷
|
3卷引用:黑龙江省哈尔滨师范大学附属中学2022-2023学年高二上学期期中考试数学试题