解题方法
1 . 已知集合
,
,若
且
,那么
的值为____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ba91412ed29881e497341a789985aa2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7c099b5a34a009b0f0e401e5f33c66a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54700061d9f312959c7159c268dede44.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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15-16高二下·上海浦东新·期中
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2 . 已知集合
,
,则集合B中的元素共有______ 个.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5615a8e266ea4e05c9a513882865e57d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf5aec329acb8150c370c3b8ee3661ba.png)
您最近一年使用:0次