用排列数符号
表示下列各式:
(1)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f856c4fc016bb2c48363376c9ef33a69.png)
______ ;
(2)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/687ed05825a6581356946e8e7218dd2c.png)
______ ;
(3)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cba5b66d1b40f8b85a4a438e7fbd5388.png)
______ (
且
).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f576aa2b5e7505a60e2c1d81da60f8d7.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f856c4fc016bb2c48363376c9ef33a69.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/687ed05825a6581356946e8e7218dd2c.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cba5b66d1b40f8b85a4a438e7fbd5388.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ff2aa68223dfc02f39d7d10fa005387.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbeaed9ec21e090defafcfeefe0059c5.png)
20-21高二·江苏·课后作业 查看更多[4]
更新时间:2021-12-06 10:19:06
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