已知命题
:关于
的方程
没有实数根;命题
,
.
(1)若命题
为真,求实数
的取值范围;
(2)若
为真命题,
为假命题,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/c38af9a9f17beb8b2ac681809622afad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f02b1f14a46e7b784007174401b6f3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10b6263f1d9b8e5824edc0b6e9abec2c.png)
(1)若命题
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
更新时间:2022-11-06 20:01:09
|
相似题推荐
解答题-问答题
|
较易
(0.85)
【推荐1】已知
.
(1)若
是
的充分条件,求实数
的取值范围;
(2)若
,命题
、
其中一个是真命题,一个是假命题,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/030824e0f94a71b364c324eea90413d8.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c7a1d739890a8951586e23b78b035bc.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/81dea63b8ce3e51adf66cf7b9982a248.png)
您最近一年使用:0次
解答题-问答题
|
较易
(0.85)
【推荐2】已经集合
,设命题
满足
,命题
只有一个实数
满足不等式
,若命题“
或
”是假命题,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5f957fdc7f7a1165eb9269fa7e6e5a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4ccd5941a5a85812d8c5a14291f92cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9d41396ead8b0bc184507b946790a34.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b7eac0f1ef144fd45c6ba1e957d2c83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20717d45305972c68452f787158de071.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)
【推荐1】设命题
:实数
满足
,其中
,命题
:实数
满足
.
(1)若
,且
和
都是真命题,求实数
的取值范围;
(2)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/d50ec8e309669099d4ab475049b5ed36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.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/3f06cfe0871caa39a020a4e09a497c5c.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.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/81dea63b8ce3e51adf66cf7b9982a248.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
解答题-作图题
|
较易
(0.85)
名校
【推荐2】已知函数
.
![](https://img.xkw.com/dksih/QBM/2022/1/18/2897032896274432/2945830704455680/STEM/543c5762add34f10ada4548e24ba8109.png?resizew=226)
(1)画出函数
的图像并写出它的值域;
(2)若
,求x的取值范围;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/061284b68e4e5b0154ce4bb7fd3602fb.png)
![](https://img.xkw.com/dksih/QBM/2022/1/18/2897032896274432/2945830704455680/STEM/543c5762add34f10ada4548e24ba8109.png?resizew=226)
(1)画出函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03f300317aa56697cf09a033235900de.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】判断下面四个不等式的解集是否为
,并说明理由:
(1)
;
(2)
;
(3)
;
(4)
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cbe7e0af8c09f3327a41e5ce39b3e6f.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fb35c24bf2facb3279e7fc145b45195.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cebe83d65d76f61231c2778e384f184.png)
(4)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8b227ad5a1a71f93b3944fac479ccde.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】若函数
的定义域为
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44bb6bb76b36978170035321d675840e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
您最近一年使用:0次
解答题-问答题
|
较易
(0.85)
【推荐3】已知不等式
.
(1)若不等式对于任意实数
恒成立,求实数
的取值范围;
(2)若存在实数
使得该不等式成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b54df5adb417f71c0187882ff9c70e0d.png)
(1)若不等式对于任意实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若存在实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d5a350074a95e2e3b3756c9ae279093.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
您最近一年使用:0次