观察下列等式:①
;②
;③
.将以上三个等式两边分别相加,得
.
(1)请你写出第n个等式:_______________________;
(2)已知
与
互为相反数,试求:
的值;
(3)探究并计算:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d842b2e150d723c948234ee36f4b6b0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b61dfa259a7cfab28fe63ff7d6211b1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7f4890678dc22224b4d23a8c38fbf11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/803b4243a314353ccc0e2b7ea67bafcb.png)
(1)请你写出第n个等式:_______________________;
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47befe47c7356a6e8ab30c021f10ec46.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e414827225218d118755dae625e801f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9698f6118f28cbbfba9507cfded9868.png)
(3)探究并计算:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dff6cb1f94ce0f8566d2ad0da05040b.png)
更新时间:2023-11-30 19:50:23
|
相似题推荐
解答题-问答题
|
适中
(0.65)
【推荐1】观察下列等式并回答问题.
第
个等式:
.
第
个等式:
.
第
个等式:
.
……
(1)则第
个等式为______,第
个等式为______.
(2)求
的值.
第
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f755354b0d8a7afcd28b5552b5e40029.png)
第
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efe707d7f8f1df55014b17e6c1a01e8d.png)
第
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4db8989fdb9ee24978e31f6c85d7145.png)
……
(1)则第
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef7b5bf211b3b84989ca713326f097da.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
解题方法
【推荐2】(1)根据图示规律填表:
![](https://img.xkw.com/dksih/QBM/2021/10/14/2829301106663424/2833304211144704/STEM/519408e0-8aa3-4e7f-8be1-bab88e1d3ccd.png)
(2)猜想:第n个图形共有多少个正方形?
![](https://img.xkw.com/dksih/QBM/2021/10/14/2829301106663424/2833304211144704/STEM/519408e0-8aa3-4e7f-8be1-bab88e1d3ccd.png)
图形编号 | ![]() | ![]() | ![]() | ![]() |
① | ||||
② | ||||
③ | ||||
④ |
您最近一年使用:0次