20-21高二·全国·假期作业
解题方法
1 . 设有下面四个命题:
①若复数
满足
,则
;
②若复数
满足
,则
是虚数;
③若复数
满足
,则
;
④若复数
、
满足
,则
;
其中是真命题的有___________ (填写所有真命题的编号).
①若复数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd79b4eb70d48435dec8824ad892494d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c70cecfc37310dd869b0d51ff44d64e9.png)
②若复数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/452262f21f9a05d43e371fa3f5b126a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
③若复数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc97f70a58d22400f7ab50fa1cdc79d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c70cecfc37310dd869b0d51ff44d64e9.png)
④若复数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af68f652b4c13657ffddf3c9e7eb262b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa224ed9be8766a4d0b5138bd57de0f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e045c712fb1efd2b4681134707cc86c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9de59a6da1ee210ccf04651ae53275dd.png)
其中是真命题的有
您最近一年使用:0次
2 . 已知
实数
满足
,
实数
满足
,则
是
的_______ .(填写“充分且不必要条件”,“必要且不充分条件”,“充分必要条件”或“既不充分也不必要条件”)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51441c8788ff11be766766227793246d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/966d9dd819cba29980da3700422c2497.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce20ef9c08e82df8c7f45bac6dd31d36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc0be05798acfc4157be7b8b13468d65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ffc1bb9d53a27d484396ad74d6a26e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e26b38e357c7d985656ba7bb3c794a5.png)
您最近一年使用:0次
3 . “
”是“
”的____ 条件.(从“充要”,“充分不必要”,“必要不充分”,“既不充分又不必要”中选择一个正确的填写)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/752455799e49f846e2601304fec5d3b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d141f34f18f4802d04ef2e4e5e803aba.png)
您最近一年使用:0次
4 . 已知集合
,则集合U中的元素的个数为___________ .(用数字填写)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f301f6d3120323426e732d24572b1773.png)
您最近一年使用:0次
2019-04-02更新
|
1538次组卷
|
4卷引用:【区级联考】天津市红桥区2019届高三一模数学(理)试题