名校
解题方法
1 . 已知
或
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4b9b470218359a4a47be9244980489e.png)
____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccf11ab2e377b7c12e93c2156f5a5a80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/842ad3e65189c68b5eee102aa8661ba6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be5f73b53d7462906b3ea311964c97a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4b9b470218359a4a47be9244980489e.png)
您最近一年使用:0次
2023-08-30更新
|
824次组卷
|
2卷引用:北师大版(2019) 必修第一册 数学奇书 第一章 预备知识 §1 集 合 §1.3 集合的基本运算 第1课时 交集与并集
解题方法
2 . 已知
集合![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed125e79c02a4d59708358068408f215.png)
(1)若
则实数
的值为____________ .
(2)若
则实数
的值为____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d82e2e77c927a7459a7263d4c3dfeb47.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed125e79c02a4d59708358068408f215.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c55fe52f9f8197bcd59ba7cdcffc21d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d30dea977800ba19d9add71840f868f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
解题方法
3 . 已知集合
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/697520d1152eb9a650f7a0f30641e156.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78b1df33db6f8f3a248218120fe83530.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12445730743b270c7e4252fbf0c36542.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/697520d1152eb9a650f7a0f30641e156.png)
您最近一年使用:0次
4 . 设集合
,
,
,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
____________ ,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ccd4162c7d09f970cb77cadacdbe521.png)
____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfb000761a3d3a2d666141aee8e1adfa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abbd33b53e523466ce9ac56cdab2b428.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dfafab412f3c79485a999b6e9108101.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3989f28e0bb6a54446edb919bdf3682.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ccd4162c7d09f970cb77cadacdbe521.png)
您最近一年使用:0次
5 . 在下列存在量词命题中是真命题的有________ .
①有的实数是无限不循环小数;②有些三角形不是等腰三角形;③有的菱形是正方形.
①有的实数是无限不循环小数;②有些三角形不是等腰三角形;③有的菱形是正方形.
您最近一年使用:0次
6 . 集合
,
,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
________ ,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ccd4162c7d09f970cb77cadacdbe521.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cceb0e5b9313581697714c204867cf3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7870b944ffc590f275a2c3b788eb66b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/940fb5a4ceeeba61d48e13ada97d08fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ccd4162c7d09f970cb77cadacdbe521.png)
您最近一年使用:0次
7 . 已知a,b是实数,则“
”是“
”的________ 条件.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c44aabd2af9adb94cc7d20cb4da2d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39d5f0d374837655cc286d326305da36.png)
您最近一年使用:0次
8 . 已知命题p:存在
.若命题
是假命题,则实数a的取值范围是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0913f70154f2f474c2075c3c24a4a432.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ffc1bb9d53a27d484396ad74d6a26e0.png)
您最近一年使用:0次
名校
9 . 若命题“
”是假命题,则实数
的取值范围是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ab38b6310e801552488e51011f95559.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2023-08-28更新
|
338次组卷
|
2卷引用:人教A版(2019) 必修第一册 数学奇书 学业评价(九) 全称量词命题与存在量词命题的否定
10 . 命题:“有的三角形是直角三角形”的否定是________ .
您最近一年使用:0次