1 . 已知
:存在
,
是方程
的两个实根,不等式
对任意实数
恒成立.
(1)若
是真命题,求
的取值范围;
(2)若
为假,
为真,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec101942df1c421d94ff4c0255fce5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77e6506f224738c4e2e0ed5b285adf3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/128c1449259e7999fad4fc7a1fe7f0e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16ce6689dbac5af185f12d7756956b0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/262d7da8f17131eef23addd1854b170d.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ffc1bb9d53a27d484396ad74d6a26e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c13472bf0353e16784a22e1f890fba40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f675824e539f50cec53120959d32e554.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
2021-01-01更新
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75次组卷
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2卷引用:广西贵港市秋季期2020-2021学年高中二年级期中教学质量检测数学试题