已知命题p:任意
,
,命题q:存在x∈R,
.若命题p为真命题,
是假命题,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53224898de85a85058ad336490bbbaa7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47dbb694e96dbd7221ac9499ddeb5d3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bc8440d57dd0500b1c429561d9661a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e26b38e357c7d985656ba7bb3c794a5.png)
更新时间:2022-11-08 15:01:38
|
相似题推荐
解答题-问答题
|
较易
(0.85)
【推荐1】分别求满足下列条件的实数a的取值范围:
(1)“
”是真命题;
(2)“
”是假命题.
(1)“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/936a3e8e37fbdf5577e4780c1293d730.png)
(2)“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3104919a2d67f43e4127a4f3028115d3.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
,命题p:
,
;命题q:
,
.
(1)若命题p为假命题,求a的取值范围;
(2)若p和q均为真命题,求a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10bbdef421c976962a270a2beabbad91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ccd7af9298cd5ff19d8866fedb42ec4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d07e8b19aca9962bdc548327bee7118.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f5e14f6464b4aeadb50f60b75d332b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a26721828644fed343e27452327cca9.png)
(1)若命题p为假命题,求a的取值范围;
(2)若p和q均为真命题,求a的取值范围.
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
,
:
,
实数
满足
.
(1)若
是真命题,求实数
的取值范围;
(2)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/243feae2a305f0e2f79deb30b137e42a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f4221278e09b66c9041bfd32c513e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce20ef9c08e82df8c7f45bac6dd31d36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9cebf65005f6ea7dbe1c7e0c4ec38bb.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(2)若
![](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
,命题q:
.
(1)写出命题
的否定;若命题
为假命题,求实数
的取值范围;
(2)是否存在实数
,使得命题
和
有且只有一个为真命题?若存在,求出实数
的取值范围;若不存在;请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d195d8cd8da2401b3aab0720e605b37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0821241faed5bc6c269de7f4a8ed024b.png)
(1)写出命题
![](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)
(2)是否存在实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.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)
您最近一年使用:0次
解答题-问答题
|
较易
(0.85)
解题方法
【推荐1】已知二次函数
的最大值是4,且不等式
的解集
.
(1)求
的解析式;
(2)若存在
,使得
成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bca88b72ac8dc9c7c137af932de90bc7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c37ffdfa8afb578b4233fa07bafb088a.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若存在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01d6c4c389979b235e34d5ff01df65a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e2c5e2d209c80c7380d68c7cfed1fae.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
.
(1)若
,求
的解集A;
(2)若对一切
的实数,均有
恒成立,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eb8d0c27865fd4a00c908b4defe02f3.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d462ed4ec22e8fe51f09eb30e8792532.png)
(2)若对一切
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c0aa2ef928b6e3341d0a0dc6d8055b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f0cc0f8df1928f575343a12dbea7106.png)
您最近一年使用:0次