名校
解题方法
1 . 设
、
是任意两个集合,请写出一个“
”的充分必要条件是________ .
![](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/dd9d50619b779c1056602f46b2a95e90.png)
您最近一年使用:0次
名校
2 . “
且
”的充要条件是“
且________ ”.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fde64f4d3c38e43fbdee24eadc4b0dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eec336faee8689281a6f6b465e7fcff9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f9e131cdd242d56b6dba05ab3363ef3.png)
您最近一年使用:0次
名校
3 . 下面四个条件中,选择正确序号填空:
①
;②
;③
;④![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2128a00f52af4427721f0ebba591daa.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08da2d9f8b81ca70a42a4037bd710200.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9844e88a798cb9b74837aea729b7953a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26f7c54faca6eac8af5309942062058d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2128a00f52af4427721f0ebba591daa.png)
使![]() | 充分而不必要条件序号是 | ———————————— |
必要而不充分条件序号是 | ———————————— | |
充要条件序号是 | ———————————— | |
既不充分也不必要条件序号是 | ———————————— |
您最近一年使用:0次