![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55314fd819cb546dfa18c3f815a6cd85.png)
更新时间:2023-01-22 22:07:48
|
相似题推荐
填空题-单空题
|
适中
(0.65)
名校
【推荐1】已知等差数列
中,
,则数列前9项和
最大值是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32e572a65f80ea5b548b6f72b1110a8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05201ef79a5d5904f492845396fb5470.png)
您最近一年使用:0次
【推荐2】1.设等差数列
的前
项和
,且满足
,则
的最大
是________ ;数列
(
)中最大的项为第____________ 项.
![](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/b4c57f282f997fafa8633e2bf3b3abb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49763402b2f2023f0ba64c37924267d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/832fd7a51831135b6ee6a01981db250e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82f63da62cb3bc66fe366dc413f64145.png)
您最近一年使用:0次
填空题-单空题
|
适中
(0.65)
名校
【推荐1】《张丘建算经》是我国古代内容极为丰富的数学名著,书中有如下问题:“今有女不善织,日减功迟,初日织五尺,末日织一尺,今共织九十尺,问织几日?”.其中“日减功迟”的具体含义是每天比前一天少织同样多的布,则每天比前一天少织布的尺数为_______ .
您最近一年使用:0次
填空题-双空题
|
适中
(0.65)
解题方法
【推荐2】已知等差数列
的前
项和为
,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f70aad73dba7089abc32d5856a2983f.png)
_________ ,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d2ddf9f98012daf5e28ef94eef66105.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/125c86ebf109fe1e983e546b5762db1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f70aad73dba7089abc32d5856a2983f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d2ddf9f98012daf5e28ef94eef66105.png)
您最近一年使用:0次