名校
1 . 已知函数
,关于
的方程
有三个不等的实根,则
的取值范围是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07b26f55c7c29644dfe0277d3e2adf10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf626af45ffd3a9e968be22dc60c7824.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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2019-01-31更新
|
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6卷引用:【校级联考】贵州省部分重点中学2019届高三3月联考数学(文)试题
2 . 已知函数
,函数
有4个零点,则实数
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/918ec7e30065382edd1495dfe817b4f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8af41b6cd7724a1b4a66408db476cb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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名校
解题方法
3 . 已知函数
是定义域为
的偶函数,当
时,
,若关于
的方程![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1682e9680b0cd008aae91eea8696c954.png)
有且只有
个不同实数根,则实数
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e2e79843faf62dde86bf858d1e0569.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21c6e503d067201c27d750de525f4349.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1682e9680b0cd008aae91eea8696c954.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfa76a059e95088cc306d55ce17b748d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b06e95b57b7a81cd81d05557a11fa92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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名校
4 . 设
是定义在
上的偶函数,
,都有
,且当
时,
,若函数
(
,
)在区间
内恰有三个不同零点,则实数
的取值范围是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51d05bfb81fb639a2697789174ac6f21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/552b49a1a5a9f04d5d958fed44ae30bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eee4b651d75576f734cd2ab2f48c0ee9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89b52daab8e08e8cb837f9d3faffff6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6ff6a910cb97bcf279eeed9fb0eec45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eda48853e8bdb7e266370b4e0d5a258.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d281e837adac1f8bf88a944e106aa305.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e90b117b52077c0216aefa6bc45d3a28.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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2016-12-04更新
|
1274次组卷
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9卷引用:贵州省遵义市2018届高三上学期第二次联考数学(理)试题
5 . 若
是定义在
上的偶函数,当
时,
,若方程
恰有4个不同的根,则实数
的取值范围是_____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e2e79843faf62dde86bf858d1e0569.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03d810fc585ab7ecc811632074fb603d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4e9793952a28ae090b29eff1bc8f752.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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真题
6 . 已知函数
若函数
恰有4个零点,则实数
的取值范围为_______
![](https://img.xkw.com/dksih/QBM/2014/6/20/1571786659823616/1571786665369600/STEM/79caeece891849809b4d78e17a412da8.png?resizew=169)
![](https://img.xkw.com/dksih/QBM/2014/6/20/1571786659823616/1571786665369600/STEM/706a338b8adc4913bbe8b38cf9a1bd58.png?resizew=96)
![](https://img.xkw.com/dksih/QBM/2014/6/20/1571786659823616/1571786665369600/STEM/ac094728ddb24d908bb530f5b89d2515.png?resizew=13)
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2016-12-03更新
|
3479次组卷
|
4卷引用:2015-2016学年贵州省凯里一中高二上滾动训练1数学试卷
2015-2016学年贵州省凯里一中高二上滾动训练1数学试卷2014年全国普通高等学校招生统一考试文科数学(天津卷)(已下线)2013-2014学年湖南省安乡一中高二下学期期末考试文科数学试卷(已下线)2013-2014学年浙江省平阳中学高二下学期期末考试文科数学试卷