已知集合
,
.
(1)当
时,求
;
(2)设命题
,命题
,若
是
的必要不充分条件,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f853d4018fa4aae51447d12876a9d54.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b1bd64d2f1d2f20ff9aa22647a6c33e.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65397f11ea8af736f38debadf420c4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3744e71abf4b43e128eabea9181b712.png)
(2)设命题
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fc11e9183ffccd297df4a1c18618bae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/218c5309e534904dc6bf768074965239.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
更新时间:2022-09-27 15:04:07
|
相似题推荐
解答题-问答题
|
较易
(0.85)
解题方法
【推荐1】已知全集
,集合
或
,
.
求:(1)
(2)
(3)
.
![](https://img.xkw.com/dksih/QBM/2015/12/1/1572330036379648/1572330041835520/STEM/4c5e1218bee6464da24ae9c9d2b717c4.png)
![](https://img.xkw.com/dksih/QBM/2015/12/1/1572330036379648/1572330041835520/STEM/7f4ffd9aba584291ab37ae1492943c58.png)
![](https://img.xkw.com/dksih/QBM/2015/12/1/1572330036379648/1572330041835520/STEM/0da598bf0349472b87ddca8e4e8c0491.png)
![](https://img.xkw.com/dksih/QBM/2015/12/1/1572330036379648/1572330041835520/STEM/6457c7b1c27f4d71a3a1900f3f6bd16a.png)
求:(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8489e291d540e36c33cd17b037c1e9cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7dc6e05bb70519ad5a92f628f52d475.png)
![](https://img.xkw.com/dksih/QBM/2015/12/1/1572330036379648/1572330041835520/STEM/1c3c895568344cf58d8c1ba0db21dddb.png)
您最近一年使用:0次
解答题-问答题
|
较易
(0.85)
名校
解题方法
【推荐2】已知集合:
:
(1)求集合A、B;
(2)求
和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/001e8002923ddcdbf12d60b03a59813e.png)
(1)求集合A、B;
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3744e71abf4b43e128eabea9181b712.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31333463f002b68938ee903c9dfbe125.png)
您最近一年使用:0次
解答题-问答题
|
较易
(0.85)
【推荐1】设集合
,
,
为实数集.
(1)当
时,求
;
(2)记
,若
是
的必要不充分条件,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb4c27569b9a654fdcbcd4450d8e6593.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6a4c6ee14d3e556aedac5f5748bedaa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7aed39f5aca78934fb383402433fe549.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/937f2cbca197188f89485bee59226cf8.png)
(2)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1172c80b0d9bcb52d4071f27171819ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
解答题-问答题
|
较易
(0.85)
名校
【推荐2】已知命题:“
,不等式
成立”是真命题.
(1)求实数
取值的集合
;
(2)设不等式
的解集为
,若
是
的必要不充分条件,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c87008291cdba83461d58dbc9426d777.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b51716d14487ab70e9d71830fedab6f5.png)
(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff4489d9b83072184c0e1d6b09be50ca.png)
(2)设不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a56878bb7b66cd8d85da45f6efd7fb8e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ed006b944ea64f970fee46e2f558467.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e23af61cd402b3789af2401bde9cbefe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
解答题-问答题
|
较易
(0.85)
名校
【推荐1】已知函数
,a为常数.
(1)若
,解关于x的不等式
;
(2)若不等式
对任意的
恒成立,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a5cf9def61bf11b347d211ae26965bc.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/200f24e682c93e02a87f3f9d57dc5d40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b61adc4745f283e4072ddd762f92ffe.png)
(2)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df8357a1030a6fb852a8e9beaa352d1c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fde64f4d3c38e43fbdee24eadc4b0dd.png)
您最近一年使用:0次
解答题-问答题
|
较易
(0.85)
【推荐2】设命题
:实数
满足
;命题
:实数
满足
.若
是
的充分不必要条件,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8123525f6e1a8665a36aa340baa1494d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4354f657327764640cce004e5c9b856.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ffc1bb9d53a27d484396ad74d6a26e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e26b38e357c7d985656ba7bb3c794a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
解答题-问答题
|
较易
(0.85)
名校
解题方法
【推荐1】已知关于
的方程
有实根,集合
.
(1)求
的取值集合
;
(2)若
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b542af9ef6c8548424fbcc52cf99fd1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e86e09bdda8e5d8ff00c1fb6cca942e5.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b05d2be27e8f53e4de3071846dffb41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
解答题-问答题
|
较易
(0.85)
【推荐2】已知集合
,
,若
是
的充分不必要条件,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba36720969c80be7c9dc95f72719e2b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/598a2d96b0ee45a6f843837c483da4a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a8a1b0b32229f6a9f5b85c11f05bee2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa238793bdf2a25b7bfd01eaa81551a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次