2020高三·江苏·专题练习
1 . 记不等式
的解集为集合A,函数
的定义域为集合B.
(1)当
时,求
;
(2)若“
”是“
”的充分条件,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f90af9ba1a3d2362ecba6775e1d0030.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f1ddeec6ffc952503e0b53dad8096d5.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b108ab31cc093f03cf48ad65429889e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fdbfa7a63fdf5717d40c8c9a73ec160.png)
(2)若“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ed006b944ea64f970fee46e2f558467.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e23af61cd402b3789af2401bde9cbefe.png)
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13-14高三上·江苏连云港·期中
2 . 已知二次函数
.
(1)设
在
上的最大值、最小值分别是
、
,集合
,且
,记
,求
的最小值.
(2)当
时,
①设
,不等式
的解集为C,且
,求实数
的取值范围;
②设![](https://img.xkw.com/dksih/QBM/2013/1/16/1571099508948992/1571099514421248/STEM/ef09e460ec954de087e3830578e51c37.png)
,求
的最小值.
![](https://img.xkw.com/dksih/QBM/2013/1/16/1571099508948992/1571099514421248/STEM/09abe553d77240be9987a32d5ddd5919.png)
(1)设
![](https://img.xkw.com/dksih/QBM/2013/1/16/1571099508948992/1571099514421248/STEM/d7732c7f114a46568e9e40fbcdf8ff6a.png)
![](https://img.xkw.com/dksih/QBM/2013/1/16/1571099508948992/1571099514421248/STEM/e0a5c94c8b644eb0a4089650af8cdc30.png)
![](https://img.xkw.com/dksih/QBM/2013/1/16/1571099508948992/1571099514421248/STEM/dfc2c86c29b44d6f93f4eedeae279d76.png)
![](https://img.xkw.com/dksih/QBM/2013/1/16/1571099508948992/1571099514421248/STEM/bf167b00f5f44ebe9e6f30c367d228cd.png)
![](https://img.xkw.com/dksih/QBM/2013/1/16/1571099508948992/1571099514421248/STEM/6fa6ddfc60024e9395cd9adeb82a0558.png)
![](https://img.xkw.com/dksih/QBM/2013/1/16/1571099508948992/1571099514421248/STEM/06fe21bccce54b6297f7cc77462ae0ce.png)
![](https://img.xkw.com/dksih/QBM/2013/1/16/1571099508948992/1571099514421248/STEM/ec51c6bd5fd0414eb82a00f57bf96628.png)
![](https://img.xkw.com/dksih/QBM/2013/1/16/1571099508948992/1571099514421248/STEM/9cfa09631c1b48348e75d87c7d645ad2.png)
(2)当
![](https://img.xkw.com/dksih/QBM/2013/1/16/1571099508948992/1571099514421248/STEM/c142f5af7a3540d8b97be3ac4c2fea87.png)
①设
![](https://img.xkw.com/dksih/QBM/2013/1/16/1571099508948992/1571099514421248/STEM/08b2f5186b25438793d71c399df2f84f.png)
![](https://img.xkw.com/dksih/QBM/2013/1/16/1571099508948992/1571099514421248/STEM/b11342a9b0184bf785e88958c8db22e5.png)
![](https://img.xkw.com/dksih/QBM/2013/1/16/1571099508948992/1571099514421248/STEM/e5f0cd0fcbf0498db0f879ba683dec96.png)
![](https://img.xkw.com/dksih/QBM/2013/1/16/1571099508948992/1571099514421248/STEM/662da1a4b76044c09d852fd16cb24c18.png)
②设
![](https://img.xkw.com/dksih/QBM/2013/1/16/1571099508948992/1571099514421248/STEM/ef09e460ec954de087e3830578e51c37.png)
![](https://img.xkw.com/dksih/QBM/2013/1/16/1571099508948992/1571099514421248/STEM/349df72b60bc4a5286c9479adcf2a465.png)
![](https://img.xkw.com/dksih/QBM/2013/1/16/1571099508948992/1571099514421248/STEM/858eb731196b4495a552fbdb8f7c41bd.png)
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3 . 记不等式x2+x﹣6<0的解集为集合A,函数y=lg(x﹣a)的定义域为集合B.若“x∈A”是“x∈B”的充分条件,则实数a的取值范围为_____ .
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2016-12-04更新
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1212次组卷
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8卷引用:2015届江苏省南京市高三第三次模拟考试数学试卷
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