已知命题
,
为假命题.
(1)求实数
的取值集合
;
(2)设集合
,且“
”是“
”的必要条件.求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/248d3fb187b56abeb0317dee8ae6a010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab0afddaa77c537f58b3e53e59beea0f.png)
(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)设集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d1c9b87d9be4bcef35a326fdc757ffe.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/294f5ba74cdf695fc9a8a8e52f421328.png)
更新时间:2023-10-08 18:08:51
|
相似题推荐
解答题-问答题
|
适中
(0.65)
解题方法
【推荐1】已知函数f(x)=
的定义域为集合A,函数g(x)=
的定义域为集合B.
(1)求集合A,B;
(2)若A∩B=A,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17d49afdf112b1a2f0b891429bad60a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/042a55ec91df28a4293524ae62f99bc6.png)
(1)求集合A,B;
(2)若A∩B=A,求实数a的取值范围.
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
名校
解题方法
【推荐2】已知集合
,
.
(1)若
,求
;
(2)若
,
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6edbd2fc58c046550002c5bc080462b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc9f840d3946b721ef8eee7b2e340116.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8a3cc8c48bf54ec8252e5dce6867754.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fdbfa7a63fdf5717d40c8c9a73ec160.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58b140e221ddf537b8964fff8557cca0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2ad78dc8b8aed907b4fe9640c997454.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
|
适中
(0.65)
名校
【推荐1】非空集合
,集合
.
(1)当
时,求
,
;
(2)若命题“
,
”是假命题,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2132686a31f52e5fb67d41d6906ae5c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8e83027a7f540dc5cf51c9aa2bd0ec7.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4cfd6f114806a1ae4e5ef46f9685d9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38ee569a8ff677073ef2b7aaac3ce69f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4456cc21fbd14680e9d6b355c9769fe5.png)
(2)若命题“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/973bc348cc7b8fa268d047d7e539e3c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d652ac80f87acceb99553e5225cf477.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4887473a8091e1ef53a169cc9f211e3a.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
名校
解题方法
【推荐2】已知集合
,函数
.
(1)求关于
的不等式
的解集;
(2)若命题“存在
,使得
”为假命题,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7871d04f3cc2c56e2296858cd639f3f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/457e8a17c7b238654b8410288a27741e.png)
(1)求关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47ffb694021b52653de5141ae27ba6d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0715b8d8f8cb86bb46837de6efb69b13.png)
(2)若命题“存在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c69ce4f3765d075486de47f55942d207.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec7138f289076d58ebd1ca1f906e11f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4887473a8091e1ef53a169cc9f211e3a.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
解题方法
【推荐1】已知函数
.
(1)求
时,
的值
(2)若当
时,
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb2d8bd25f1394fd2f745d2bffd8c016.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d87cd4403487962c38c8707ba3ab3fa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24a57996290794e082b21d8f1dfc322a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dce6162c10f5e2607dc0ea8676d5fb8.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
|
适中
(0.65)
解题方法
【推荐2】已知函数
.
(1)若
在
上恒成立,求实数
的取值范围;
(2)解关于
的不等式
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5baab109dca3456722b2058729c88039.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e2405c4822bceae1cf191edb502d3b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2628e2dd7a988cc80530e739c22b2280.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)解关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a71baf6217604517fd98fa97d0f55b43.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
名校
解题方法
【推荐3】已知定义域为
的函数
是奇函数.
(1)求
的值;
(2)证明:函数
在
上是增函数;
(3)若对任意的
,不等式
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d9f270119e8fd1716b18d160b14007a.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)证明:函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
(3)若对任意的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bf039c46a25e331446c6ee1e9af3c82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/009b3d7a96ef45c9aebbef59ba152aa0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
您最近一年使用:0次