若
的展开式中含有
项的系数为8,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b67ab72a88730ca3d2189f8e04bff46c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d800f03de80068a1172beac3a2c75587.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92b012b1ab660dc5923a804f3fbf4c47.png)
A.2 | B.![]() | C.![]() | D.![]() |
更新时间:2017-05-18 12:42:12
|
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单选题
|
适中
(0.65)
名校
解题方法
【推荐1】设a
,b
(1﹣x2)dx,c=2ln2,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/711b8fd2a8b06c34e69d24bb3fda0039.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2efe9994f50ff2d253f0c07d75c39bb8.png)
A.a<b<c | B.b<1<c<a | C.c<a<b | D.c<b<a |
您最近一年使用:0次
单选题
|
适中
(0.65)
【推荐1】已知
的展开式中含
的项的系数为25,则
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987517758fad59f6f695761deb2a5ebd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9463923108dfbdbf90da767bc44c665.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c865b15a2b646e7418fa7a05eb560d53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7e697560c1a1a2604fcc009b5dbf46b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987517758fad59f6f695761deb2a5ebd.png)
A.![]() | B.![]() | C.5 | D.![]() |
您最近一年使用:0次
单选题
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适中
(0.65)
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【推荐2】已知
,
,且
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eec7e146110a1d5a3d9b79c593691f9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f093c61867ee4ce75f951d46b9b123.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7ad409d87efdf3fa3e98bf16edad0cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f3cb8d72bb2e281b943b3b430138ef7.png)
A.4 | B.5 | C.7 | D.8 |
您最近一年使用:0次