设
是定义在
上的三个函数,则以下命题中正确的个数是( )
①若
均为奇函数,则
均为奇函数;
②若
均为
上的严格增函数,则
中至少有一个为
上的严格增函数;
③若
均是以
为周期的函数,则
均是以
为周期的函数;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc4978f812146b4566467ee255fc1c71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.png)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7731db37a029c3a1fa1ec07c0f48b612.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc4978f812146b4566467ee255fc1c71.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7731db37a029c3a1fa1ec07c0f48b612.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7a19bbab2270fc8e694527e801556cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc4978f812146b4566467ee255fc1c71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7a19bbab2270fc8e694527e801556cf.png)
③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7731db37a029c3a1fa1ec07c0f48b612.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc4978f812146b4566467ee255fc1c71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
A.0个 | B.1个 | C.2个 | D.3个 |
更新时间:2022-11-22 11:01:15
|
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【推荐1】下列函数中是奇函数,又在定义域内为减函数的是
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【推荐1】奇函数
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
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![](https://img.xkw.com/dksih/QBM/2016/11/8/1573134018592768/1573134024359936/STEM/1a4ee7fdc63841b68a1bdac109d5b684.png)
![](https://img.xkw.com/dksih/QBM/2016/11/8/1573134018592768/1573134024359936/STEM/8be0486d752a4ac79bc8f41557e1d059.png)
![](https://img.xkw.com/dksih/QBM/2016/11/8/1573134018592768/1573134024359936/STEM/6c9280ef2dd445ed854f421d3ea1b237.png)
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