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)
更新时间:2016-12-04 14:04:24
|
相似题推荐
填空题-单空题
|
适中
(0.65)
名校
【推荐1】已知数列
,满足
,
的前
项和为
,对任意的
,当
时,都有
,则
的取值范围为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b0614debf6758b1e8b865b5a5e7c7ac.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/48f093c61867ee4ce75f951d46b9b123.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef5936031b2ec764611f0ecf377fa8f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/315a8e646883171607812e0566d37b4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d27182444d3da4003680f07ec299087c.png)
您最近一年使用:0次
填空题-单空题
|
适中
(0.65)
解题方法
【推荐2】已知数列
为等差数列,其前n项和为
,且
,给出以下结论:①
;②
;③
;④数列
中的最大项为
;⑤
其中正确的有______ .(写出所有正确结论的序号)
![](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/2f0fb2f484d3d73b26acc02ffdc56a3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2d8bbb4a09e0ac86bbae46222a90841.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15d4688b8b20ecd1c8f6e3fa0b1eab62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb23a0aa533fe2f67a50551bb7772ecb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/846fa57d92d6ad44d6a0cafad1e71ed4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b87df689b605e7a283b56d454c3736a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5498fbc6ce75d6b904152f231913ab4.png)
您最近一年使用:0次
【推荐1】设数列
满足
,
,记
,则使得
成立的最小正整数n是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ea8d0e50065114b05ef2dc1ea1129cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2e7f0faddbd0125143197e1a4a0fb29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1869282564c9066ded15e41b6794a58c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c0c2b029e1c1d7963c043ca041d82de.png)
您最近一年使用:0次
【推荐2】已知数列
中,
,
,且![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a09a4bc955b154b3056aedfb5921640.png)
,则![](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/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c9b6e51986fe5d7a7265e0e93adcb4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a09a4bc955b154b3056aedfb5921640.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9fc82353331abee0828dee9b38c08f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3f7fda69e2b32b9ced2239f915fa59b.png)
您最近一年使用:0次