下列四个函数中偶函数的序号为__
①![](https://staticzujuan.xkw.com/quesimg/Upload/formula/554caf09a33717bfc6bc0a120a456870.png)
②![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca3fd09aa6bd2c73f713869a28e38e30.png)
③![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ab5e7211836e3564529e4a37c6697f2.png)
④
.
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/554caf09a33717bfc6bc0a120a456870.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca3fd09aa6bd2c73f713869a28e38e30.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ab5e7211836e3564529e4a37c6697f2.png)
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3ec08df76e656f6122b5424b806634c.png)
更新时间:2020-01-11 13:04:48
|
【知识点】 函数奇偶性的定义与判断解读
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解题方法
【推荐1】写出一个同时具有下列性质①②③的函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ba99a5c5661eedaef4b36ade1a7c5c5.png)
___________ .①
是定义域为
的奇函数;②
;③
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ba99a5c5661eedaef4b36ade1a7c5c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b3b657ebd1733b4f19dcbec44919924.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ed670b1f668778c6243f3f7470ee7d2.png)
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【推荐2】下列命题正确的是________ .
①对于函数
,若
,则
是奇函数;
②若
是奇函数,则
;
③若函数
的图像不关于
轴对称,则
一定不是偶函数.
①对于函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ab38bf4a7be677eb105c53781d154b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01bea8bf593f594c51fc7cc547482bee.png)
③若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
您最近一年使用:0次