定义在R上函数
,若函数
关于点
对称,且
则关于x的方程
(
)有n个不同的实数解,则n的所有可能的值为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2c3dd8fa2dc8c0c7e255bfb054ad34c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7a999c36de5c9a9ce876a4a56fa34c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9d82e43ad919265cce96c0b5c766b36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a9a22c8421fbdc1e59da894ec34ca8e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2725a89d93c791f7a0098f4964587905.png)
A.2 | B.4 |
C.2或4 | D.2或4或6 |
19-20高一上·四川资阳·期末 查看更多[3]
更新时间:2020-02-21 11:07:47
|
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解题方法
【推荐1】若函数
在
上既是奇函数,又是减函数,则
的图像是( )
![](https://img.xkw.com/dksih/QBM/2015/5/18/1572112270327808/1572112276111360/STEM/6de480b4051d46269f3366640f0ef431.png?resizew=228)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://img.xkw.com/dksih/QBM/2015/5/18/1572112270327808/1572112276111360/STEM/9684eecc66c340a6b717884725b0a4fe.png?resizew=124)
A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐2】已知函数
的定义域为
,若
是奇函数,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca9e0dcfe20e16312dd0f390fa78529c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60cce332317884d04b38b1ebe8a50d18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17d3d818caf855edc7b5b0843a6dc8aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca9e0dcfe20e16312dd0f390fa78529c.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐3】已知
是定义在
上的奇函数,当
时,
,函数
,如果对于任意
,存在
,使得
,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/4ead3fdcb8fe8f5eb3dbe7d96cabc28b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71bb7883ea87e6275472dbe14ee62357.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d900b106c2b44b211c60b0ba9c2cf6d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1014442cab52c591abba3519d912d83d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b1647deca74be1346f76ac07382917b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/204e6006eacca1a448fe6991f3c121f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/347ac85769012f89d1f9951684e1d7b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐1】已知函数
,则使
成立的
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/045767cfbb3cf9d493d3f0a74439a2a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99147dd4c9d49cf0fd4c655de231d79b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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【推荐1】已知符号
表示不超过
的最大整数,函数
,则以下结论正确的是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fab6009ffb15a88bd843a1c2b8d7770.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43e9981f45dc1a44f6a0e86cee10a15e.png)
A.函数![]() ![]() |
B.函数![]() |
C.函数![]() ![]() |
D.函数![]() ![]() |
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