在
的展开式中,
的系数是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2202f56c2acd7f97cf97093d38529ea4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3336c8ed5361c10c37300e41e03f9f2f.png)
更新时间:2019-05-19 20:48:14
|
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填空题-双空题
|
适中
(0.65)
解题方法
【推荐1】已知
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbfc875ca919921e8f63a6fca648561b.png)
___________ ,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc447243f83558f8722b56d49b0f5d3a.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39d130090e56faf3e10f4c4c8731f4ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbfc875ca919921e8f63a6fca648561b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc447243f83558f8722b56d49b0f5d3a.png)
您最近一年使用:0次
填空题-双空题
|
适中
(0.65)
【推荐2】若
的展开式中只有第5项的二项式系数最大,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f3cb8d72bb2e281b943b3b430138ef7.png)
____ ,展开式中的
项为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84e6fd57374e794ca5154735f4e5c40b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f3cb8d72bb2e281b943b3b430138ef7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
您最近一年使用:0次