1 . 已知
是等比数列,
,且
,
,
成等差数列,若
,则数列
前6项的和![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5999dfe5c2dab8c62ffaf8492bc2713d.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a87f066219fb69cd05e6189bf6077452.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d04a8b7a7595251251b8e0b7e665e8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c20e049a80f57a589b1f8425b016e73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34bc3df3bea2def2fd30b0f90d75ef32.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0f6000421c5370e4b89f23be199f388.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fce83115a50f99e08e9a2db7267aeed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5999dfe5c2dab8c62ffaf8492bc2713d.png)
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2 . 已知
,数列
的前
项和
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adf14ebc775db2414a5a960badca8960.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/267c99ff3f6386113dbaa7b1e49612da.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/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adf14ebc775db2414a5a960badca8960.png)
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名校
3 . 已知各项均为正数的等比数列
的前
项积为
,
,
(
且
),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/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02e1b855a6bf3dcdf63c0368b2fe94f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e8e19e03715b5f6d3d539f1e0f08f34.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67ca5fd57c2c2fcc3c7a574fdd1467d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/406185f4ad8bcd99e23adc8d289088ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ccd4162c7d09f970cb77cadacdbe521.png)
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2020-07-23更新
|
201次组卷
|
3卷引用:陕西省安康中学2020届高三下学期仿真模拟数学(理)试题
4 . 已知一组数据分别是
,则这组数据的中位数与众数的等比中项为_________ ;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8373d6e6553eceb63c31014712a2465.png)
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2020-06-25更新
|
334次组卷
|
3卷引用:陕西省西安中学2020届高三下学期仿真考试(一)数学(理)试题
解题方法
5 . 已知数列
满足
,令
,则数列
的通项公式为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942ed174dfdafaf5f0a68cac579110f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a39164ab10a5e2716df74cabf7f3576f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/831de7531e4b51f836a5ef44c4791198.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
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2020-05-31更新
|
323次组卷
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4卷引用:2020届陕西省宝鸡市高三高考模拟检测(三)数学(理科)试题
2020届陕西省宝鸡市高三高考模拟检测(三)数学(理科)试题2020届陕西省宝鸡市高三第三次高考模拟检测数学(文)试题陕西省宝鸡市2020届高三高考数学(文科)(三模)模拟试题(已下线)考点32 等比数列的概念、通项公式与求和公式应用(考点专练)-备战2021年新高考数学一轮复习考点微专题
解题方法
6 . 已知数列
的前
项和为
,若
,
则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04c2864e2ec3416cc4c081ac1f71a0af.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/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcd53d9cb945d4a3f4e15b5c884a8097.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04c2864e2ec3416cc4c081ac1f71a0af.png)
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2020-05-27更新
|
1870次组卷
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5卷引用:陕西省部分学校2020-2021学年高三上学期摸底检测文科数学试题
陕西省部分学校2020-2021学年高三上学期摸底检测文科数学试题2020届辽宁省部分重点中学协作体高三模拟数学(理科)试题2020届辽宁省部分重点中学协作体高三高考模拟数学(文科)试题辽宁省辽东南协作体2021-2022学年高三上学期期中考试数学试题(已下线)专题23 数列通项公式的求解策略-学会解题之高三数学万能解题模板【2022版】
解题方法
7 . 已知数列
的前
项之和为
,对任意的
,都有
.若
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dbd9ff686703cad03aa383e5fec21.png)
______ ;数列
中最大的项为______ .
![](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/48f093c61867ee4ce75f951d46b9b123.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c92122e93201afb7d33ea50b04e9c593.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9778016514ce3130c8e26334dd55560e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f093c61867ee4ce75f951d46b9b123.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dbd9ff686703cad03aa383e5fec21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
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名校
8 . 已知公差不为0的等差数列
中,
,
,
依次成等比数列,若
,
,
,
,…,
,…成等比数列,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/414187fca31df508dbf88d7f2bb83662.png)
_____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e88093a749c0d46e0ee931ecfaff925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daf464629fa321a6ff7401ab79f07083.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7da2f386b78cdf6489efaa2f5820d3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c1ccc6c74b8754e9bcbb3f39a11b6f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5da4cd81500bdb43118150dbdb1541e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8bc714c610debb996bf67d1e0d85666.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec342b0a17f898d4e70f75f04b50fdb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f814b537650d7b2ab376a1dbca25d84d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/414187fca31df508dbf88d7f2bb83662.png)
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2020-05-24更新
|
373次组卷
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2卷引用:陕西省西安中学2020届高三下学期第八次模拟考试数学(理)试题
2020高三·全国·专题练习
名校
9 . 设等比数列
的前
项和为
,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42e4487468ab2823d6dbf7f0ebd2eb38.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/ce65ee609a275e790b5c71f7ed11cb17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42e4487468ab2823d6dbf7f0ebd2eb38.png)
您最近一年使用:0次
2020-05-19更新
|
353次组卷
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3卷引用:陕西省榆林市绥德中学2020届高三下学期第五次模拟考试数学(文)试题
陕西省榆林市绥德中学2020届高三下学期第五次模拟考试数学(文)试题陕西省咸阳市实验中学2019-2020学年高二上学期第一次月考数学试题(已下线)题型07 等比数列前n项和构造新等比数列-2020届秒杀高考数学题型之数列