1 . 下列各式正确的是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04582116cd765fcc5a52f44279ad6c94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd995178601c2ad7b40f973d268c7bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04582116cd765fcc5a52f44279ad6c94.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2 . 已知正整数n满足
.
(1)求n;
(2)求
的展开式中
的系数.(用数字表示结果)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/966709e9c849b9dc3280194a188172a5.png)
(1)求n;
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/385401bad0cb8bbe66a21024b948b05e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d800f03de80068a1172beac3a2c75587.png)
您最近一年使用:0次
2022-04-10更新
|
503次组卷
|
3卷引用:江苏省扬州中学2021-2022学年高二下学期5月月考数学试题
3 .
展开式中
的系数是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7e43a3240c3bb1f10260e41814a86cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d800f03de80068a1172beac3a2c75587.png)
A.80 | B.84 | C.120 | D.210 |
您最近一年使用:0次
2021-09-02更新
|
455次组卷
|
3卷引用:江苏省扬州市江都区丁沟中学2021-2022学年高二下学期期末模拟数学试题