名校
解题方法
1 . 若不等式
的解集非空,则实数
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9e50536a1ac9bea7cc679f361ad8319.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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4卷引用:内蒙古开鲁县第一中学2019-2020学年高二下学期期中考试数学(文)试题
名校
2 . 已知函数
.
(1)当
时,求不等式
的解集;
(2)若存在实数
,使
成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/048f0a2711874f93d4621d8ad9d6e4ad.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecd1eb66cc310e02cfea9b11724613bc.png)
(2)若存在实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa1a4c3a86f97095e30c71a94378ce76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2019-11-06更新
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8卷引用:内蒙古包头市第四中学2020-2021学年高三上学期期中考试数学(文)试题
名校
3 . 已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5281eb314ac1e5fac77aa77f18f130fa.png)
1
当
时,求不等式
的解集;
2
若关于x的不等式
有实数解,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5281eb314ac1e5fac77aa77f18f130fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11d71379442f28c038d367d49422cf90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987517758fad59f6f695761deb2a5ebd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5036e26e77152eb05955d2aceca93950.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3796b30fdd80b4bdc34ef90c338a01aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11d71379442f28c038d367d49422cf90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987517758fad59f6f695761deb2a5ebd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c9a86e539e52dda14dba678aacd00e9.png)
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5卷引用:【全国百强校】内蒙古杭锦后旗奋斗中学2018-2019学年高二下学期期中考试数学(文)试题