如图所示的数表是由1开始的连续自然数组成的,观察规律并解决下列问题:
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/2/83978081-e8ba-42cb-844a-8bb052fb44ea.png?resizew=316)
(1)第10行的最后一个数是______;
(2)第20行共有______个数;
(3)数字2023排在第_____行,从右往左数是第_____个数.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/2/83978081-e8ba-42cb-844a-8bb052fb44ea.png?resizew=316)
(1)第10行的最后一个数是______;
(2)第20行共有______个数;
(3)数字2023排在第_____行,从右往左数是第_____个数.
更新时间:2024-04-02 15:31:02
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相似题推荐
解答题-问答题
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较易
(0.85)
【推荐1】观察以下等式:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98d472bdb2aa79f2095f4a7ee4e5410b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32d7d5d58bdba27633319f6e15402474.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f498f3470f8e465b09dd17fae7c7a21.png)
(1)按以上等式的规律,填空:
①
______.
②
______.
(2)利用多项式的乘法法则,说明(1)中②的等式成立.
(3)利用(1)中的公式化简;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98d472bdb2aa79f2095f4a7ee4e5410b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32d7d5d58bdba27633319f6e15402474.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f498f3470f8e465b09dd17fae7c7a21.png)
(1)按以上等式的规律,填空:
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49afcbf3f35667e861dbdec5400cdea4.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/570888652c79ec6ee89c7ff27163cc70.png)
(2)利用多项式的乘法法则,说明(1)中②的等式成立.
(3)利用(1)中的公式化简;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b0ed8157ebe947eadf0b56f1a4ff451.png)
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解答题-问答题
|
较易
(0.85)
【推荐2】观察下列不等式:①
;②
;③
;
根据上述规律,解决下列问题:
(1)完成第
个不等式:___________;
(2)写出你猜想的第
个不等式:_____________(用含
的不等式表示);
(3)利用上面的猜想,比较
和
的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/feb231f24899f84a609aa25331bb414e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24edee51be6ebbfdbe1e20052b938214.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/606452ab522a088c2e47cb157adfa4c7.png)
根据上述规律,解决下列问题:
(1)完成第
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d91e07104b699c4012be2d26160976a2.png)
(2)写出你猜想的第
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
(3)利用上面的猜想,比较
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c528c0d583fdab5886fc9a88b7d354f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee6a2eba56d4f2d1670b0256b8d86b92.png)
您最近一年使用:0次