已知函数
与
的图象上存在关于
轴对称的点,则
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ec73de0a5d85bc58a04fbf5757a634d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef1abe8ae1df38c5c8158a48d36389a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fcf9bfbf771cb6118f8e631724314e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4887473a8091e1ef53a169cc9f211e3a.png)
A.![]() | B.![]() | C.![]() | D.![]() |
更新时间:2018-04-19 07:19:17
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单选题
|
较难
(0.4)
【推荐1】已知函数
的图象上关于
轴对称的点至少有3对,则实数
的取值范围是
![](https://img.xkw.com/dksih/QBM/2014/11/14/1571895064977408/1571895070597120/STEM/83e1996b62e2475198e033e9198a9461.png)
![](https://img.xkw.com/dksih/QBM/2014/11/14/1571895064977408/1571895070597120/STEM/bab435b086a24f14b0dee430b00a2498.png)
![](https://img.xkw.com/dksih/QBM/2014/11/14/1571895064977408/1571895070597120/STEM/60478724127b4f5bb7ddd198e1a84251.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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单选题
|
较难
(0.4)
【推荐2】设
是含数1的有限实数集,
是定义在
上的函数,若
的图象绕原点逆时针旋转
后与原图象重合,则在以下各项中
的取值只可能是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d88591679796c52024d11c4de641bdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74156327e5659301f391814605688899.png)
A.![]() | B.1 | C.![]() | D.0 |
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名校
【推荐1】已知函数
,若关于
的方程
恰有两个不同解
,则
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a3a62574b570d094f137c1bd27980bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cde097fd84d6e5c522d1f34ad16b8ab4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aca579894dad67bc82cb715fd48e0d70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/750915e93c952da4b8822d8a714245f2.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
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解题方法
【推荐2】已知
定义在
上的偶函数,,且当
时,
,则函数
的零点个数是( )
![](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/966b60302d80d8613675bb3dd5c03164.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83e73967370baf10a1a4ed5a1f55cb48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
A.1 | B.2 | C.3 | D.4 |
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