河图、洛书是我国古代流传下来的两幅神秘图案,蕴含了深奥的宇宙星象之理,被誉为“宇宙魔方”.洛书是世界上最古老的三阶幻方(一般地,将连续的正整数1,2,3,…,
填入
个方格中,使得每行、每列、每条对角线上的数的和相等,这个正方形叫做n阶幻方).记n阶幻方的数之和为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9620357ea5be4037cfdccd09a27d3862.png)
______ ,若
,则n的最小值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ceef1abeeef220b4fe5f7d96feedd90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/767f5a4746f04db68386fac3970b1ed1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9620357ea5be4037cfdccd09a27d3862.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa06f906c8f9b48407cc1c52f9629cc6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/10/26644038-0efa-4dc5-85dc-bec249cbf6b3.png?resizew=440)
22-23高二下·广东佛山·期末 查看更多[2]
更新时间:2023-07-08 11:34:35
|
相似题推荐
填空题-单空题
|
较易
(0.85)
名校
【推荐1】已知等差数列{an}的公差为d(d≠0),前n项和为Sn,且数列{
}也是公差为d的等差数列,则d=________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40b189db319b4a16e35c62330bd0b7b2.png)
您最近一年使用:0次
填空题-单空题
|
较易
(0.85)
【推荐2】在公差不为零的等差数列
中,
是
与
的等比中项,则
=_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c1ccc6c74b8754e9bcbb3f39a11b6f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc858b7a95c5006a44067022da09f667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4299fa080986ce4682f8e626acc7390.png)
您最近一年使用:0次
填空题-单空题
|
较易
(0.85)
解题方法
【推荐1】已知等差数列
的前n项和为
,且满足
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d211c5a622d0be3b39931d814f9a683.png)
______ .
![](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/5802cb3626ec378eb270a3720088926a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d211c5a622d0be3b39931d814f9a683.png)
您最近一年使用:0次
填空题-单空题
|
较易
(0.85)
【推荐2】等差数列{an}中,a4=10,前12项的和S12=90,则a18的值为________ .
您最近一年使用:0次