名校
解题方法
1 . (1)求
的展开式中含
的项;
(2)若
,求:
①
;
②
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2795704b4a4e5810978b8359e2bebd7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d800f03de80068a1172beac3a2c75587.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/166af9a65b242970f94e77da8eade0b7.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff39c6554f167215ecaf5f261a71afc3.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423bd94bef8f2c4ebba6d17dfb97e0a4.png)
您最近一年使用:0次
2024-05-22更新
|
429次组卷
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2卷引用:湖北省鄂北六校2023-2024学年高二下学期期中考试数学试卷
名校
解题方法
2 . 若
的展开式中
的系数为70,则实数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f63963f972a037468e0e0bc94ecf1d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0a89e3c30f6e4d4c5db4378b05d987.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
您最近一年使用:0次
2024-01-17更新
|
890次组卷
|
6卷引用:湖北省部分高中联考协作体2023-2024学年高二下学期期中考试数学试卷