如图是三角形数阵
,
则:若
,
相等,则用含
的式子表示
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b31463b348f21711420670df9d7d03a8.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18445b1ff679c8c6d79f54b16f4119b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89e3f64ea7de23fa087877f0ac9fe317.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b31463b348f21711420670df9d7d03a8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/23/edd39ea5-0ddd-4d84-a3fb-0b5274c920f3.png?resizew=340)
更新时间:2023-05-18 21:15:43
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