若关于
的不等式
的解集中恰有3个整数,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/befd797ca59dd8fa99c3d83869fdbf87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
更新时间:2021-10-19 16:20:01
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【推荐2】设命题p:实数a满足
,命题q:方程:
表示焦点在y轴上的椭圆.
(1)若
,
为真命题,求a的取值范围;
(2)若q是p的充分不必要条件,求实数t的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4571dd7aba5af36a962a7048f58b4c30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db91f1188f39720d7980b89ef4a7c5a9.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a2a51944c720568f35d443589dfc1aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c13472bf0353e16784a22e1f890fba40.png)
(2)若q是p的充分不必要条件,求实数t的取值范围.
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适中
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【推荐1】已知二次函数
.
(1)若
在
上为增函数,求
的取值范围;
(2)求
在
上的最小值;
(3)若
且关于
的不等式
的解集为
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b80e17abb0cf70bd63fe94ba6f3b4f49.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b72121844b80009dd0d192cb08cc0aa8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a349161b52f9493112280309454cd9d.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1bd90a4050dfbb46c8922bdc4f4d9f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/422c6244f12d2dafc063d9f2fd165a03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1de9d3052d05653a07314e2116d111c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
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【推荐2】已知定义在
上的函数
(其中
).
(1)若关于
的不等式
的解集为
,求实数
的值;
(2)若不等式
对任意
恒成立,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9697534b10d474c88d5c472e3fd427d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
(1)若关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a71baf6217604517fd98fa97d0f55b43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b61bb7cb94b4d06f0090df1e365667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fc344df892a05d0282b0da21045a0ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c0aa2ef928b6e3341d0a0dc6d8055b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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