记
表示不超过实数
的最大整数.则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b11e32c2618f663c9302c90eac4d154.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c4f5908d6a1217e493ed7586b6964dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b11e32c2618f663c9302c90eac4d154.png)
2012高三·河南·竞赛 查看更多[1]
(已下线)2012年全国高中数学联赛河南赛区预赛试题
更新时间:2018-12-13 21:00:59
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【知识点】 数列求和
相似题推荐
填空题-单空题
|
适中
(0.65)
【推荐1】在等比数列
中,
,前n项的几何平均数是8.若从前n项中抽出一项后的几何平均数是
,则抽出的是第______ 项.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3bf75e900509aa73771677aeb81cb14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e2031d209711b058f3d278ede3c1d33.png)
您最近一年使用:0次
填空题-单空题
|
适中
(0.65)
【推荐2】已知
的面积为
,
的三条中线构成
,其面积为
,
的三条中线构成
,其面积为
.则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f943b5c896d878d5b76cddd4594dbe56.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62c3135fa20c32d04a270750f77c1f2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53c5ec951dd6c4ef700c99ea4c04f5ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16a59d7de267ed6bc66c6534482db05a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2422622b34b450e43d7e205f42428a84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f943b5c896d878d5b76cddd4594dbe56.png)
您最近一年使用:0次