名校
1 . 在等差数列
中,
,记
,则数列
最大项的值为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/864601f12fe1f9dda3110f42e4ca1d98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe39f583c1367c37055634294bf7e2d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d09b1397026ef8f4a2762b896e4ba2a8.png)
您最近一年使用:0次
2022-03-04更新
|
788次组卷
|
4卷引用:安徽省合肥市第六中学2022届高三下学期高考前诊断暨预测理科数学试题
2 . 已知等比数列
的首项为
,公比为
,前
项和为
,且对任意的![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5b0aafc603ba02b6702e785b00a5013.png)
*,都有
恒成立,则
的最小值为____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4b8503f4706b8321e4e79a87eadea84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3389f53711264b0acba3ba6019f8b908.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/f5b0aafc603ba02b6702e785b00a5013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cad135b14c9dcd83eab6618d7694c7b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/151d34fcff014e9c2e0a1f479478a0f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06430886275f5ad62bcda62fce691e99.png)
您最近一年使用:0次
2019-02-12更新
|
749次组卷
|
3卷引用:【校级联考】安徽省合肥一中、马鞍山二中等六校教育研究会2019届高三第二次联考数学(文)试题
【校级联考】安徽省合肥一中、马鞍山二中等六校教育研究会2019届高三第二次联考数学(文)试题河南省郑州市2020届高三第三次质量预测理科数学试题(已下线)类型二 等比数列-【题型突破】备战2022年高考数学二轮基础题型+重难题型突破(新高考专用)
解题方法
3 . 若
是数列
的前
项的和,且
,则数列
的最大项的值为_________ .
![](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/d98834fb1bef702d09d81b8de3a8244e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
您最近一年使用:0次
2016-12-04更新
|
387次组卷
|
3卷引用:2016届安徽省合肥一中等六校高三第二次联考理科数学试卷
4 . 设
是首项为
,公比为
的等比数列,对于满足
的整数
,数列
由![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a299ec323ba8347228333a8f0109eb95.png)
确定,记
.则
取最小值时,
等于 .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5688a18bf95c12bad7fc881e28ba8734.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a993f37da825354cbb88dd98035b819.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8555681d4c4091b895ca9ed8077a3dec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a299ec323ba8347228333a8f0109eb95.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42f3bdc5351f0c9f7576a4186308c837.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbf122f12099d8da83518704e7c7234d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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