命题p:
,
,分别 在下列条件下求实数m的范围,令p为真命题.
(1)
;
(2)
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a375fae50ad1b3d14c011673110256fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ac671e6d87de2fb5f7ad3aab582866d.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9efbb66d7145f604e253fe20b67f386c.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bc378d312bb86d732e8f3f64d8cc5d0.png)
更新时间:2023-10-16 12:53:45
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【推荐1】已知
,命题p:
,不等式
恒成立;命题q:
,使得
成立.
(1)若p为真命题,求实数m的取值范围;
(2)若q和p一真一假,求实数m的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcd9218a657b17654c5d757a6f7dee9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01af60e050aecbd86b5db22f64343b10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87b93c5e8c514bcfb1c827cee7ce7d6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3757e17cad80d236dfc0b6b1c6dcc35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1849288852f71c2d0db8f4b6748eba3.png)
(1)若p为真命题,求实数m的取值范围;
(2)若q和p一真一假,求实数m的取值范围.
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【推荐2】命题
:任意
,
成立;命题
:存在
,
+
成立.
(1)若命题
为假命题,求实数
的取值范围;
(2)若命题
和
有且只有一个为真命题,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24a57996290794e082b21d8f1dfc322a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d609c6e809717c61cbbae6be515a2d35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24a57996290794e082b21d8f1dfc322a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0a89e3c30f6e4d4c5db4378b05d987.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b99ea0c026f1ba13accae4b8c355c14.png)
(1)若命题
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)若命题
![](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/294f5ba74cdf695fc9a8a8e52f421328.png)
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【推荐1】已知关于
的一元二次方程
.
(1)若方程有两个不等实数根,求
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(2)若方程两根之差的绝对值为
,试求
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(3)若方程两不等实根都小于5,试求
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3214c90e674bf6b34d33c68b60046f92.png)
(1)若方程有两个不等实数根,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)若方程两根之差的绝对值为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2967337e3fcb228dded64ab0c41a17e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(3)若方程两不等实根都小于5,试求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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