已知
,则二项式
的展开式中含
项的系数是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/114b121f658f026ad3d79f432adacb62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/026923b152eeb8d4496fa73732670378.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d800f03de80068a1172beac3a2c75587.png)
A.240 | B.180 | C.72 | D.54 |
更新时间:2022-07-15 14:47:51
|
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单选题
|
较易
(0.85)
【推荐2】若
在
上可导,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adfb2f0ab0d923fc4aef42ed5591da0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08c0e44bdefe1f06056e9c2bf7686ddb.png)
A.16 | B.54 | C.﹣24 | D.﹣18 |
您最近一年使用:0次
单选题
|
较易
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【推荐2】已知
展开式各项的二项式系数之和为512,则展开式中的常数项是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f295c62ec9dfd765b13c30071b6de740.png)
A.84 | B.-84 | C.126 | D.-126 |
您最近一年使用:0次