下列四个判断正确的是______ (写出所有正确判断的序号.)
①函数
是奇函数,但不是偶函数;
②函数
与函数
表示同一个函数;
③已知函数
图象的一条对称轴为
,则
的值为
;
④设函数
,若关于
的方程
有四个不同的解
,且
,则
的值为
.
①函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b394e40fa8dd611854991f7f5a664198.png)
②函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13bbec793ee627a437f716dd44fe3077.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8122be6ae3580b7ee75c1e51aaea8d6c.png)
③已知函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0aa6d3526ce93db7107f748e925c4f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa072e56e4cdf7a02f5a67bd35dbabc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
④设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d538f46e0c4de5aa933c1441784f5666.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/338316b0fe50fdea0f2f75aec4c990dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8ccd22fd0ca1a8e1468329284f91b6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3604274ad6707a906eba371a9e884144.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae58f12a4c1018c35627ce5eaa8455a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
更新时间:2020-02-21 14:53:31
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相似题推荐
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【推荐1】下列各组函数中,表示同一函数的是__________ .
①
与
;②
与![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc4be8042436b2c35b9e1f0cd5da7e51.png)
③
与
;④
与
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26af862ac8e4e2fe03204b0463a7a789.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae6759cd99afa33229f83bf0b0eda269.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/971a35d9558aae42c6ecc26c2d681d97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc4be8042436b2c35b9e1f0cd5da7e51.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c07bd1bced5e02c11b99392f9526f7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8eda90c3b4ab0db80f7de903a450a321.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58ebdc4d97e166405362b400d54f0903.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f333dd4bf62f53fb0746e926df4e1b2.png)
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【推荐2】以下命题,正确的是__________
①函数
和
为同一函数
②如果函数
在区间
内满足
,那么函数
在区间
内有零点
③由实数
组成的集合,至多有2个元素
④函数
的减区间为
①函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29e44284cb19805a584880a686ac3df9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61fcea320f75f7433dc0739f141b1e61.png)
②如果函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f030c36bb8786df88d401792062a4100.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d98cd0cc0fe188caa6f45d20e5b5c6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4562f3225c98cf5cb11b47d98c9cc9c3.png)
③由实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0fa05933757041dfb78c9f4c1c0face.png)
④函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/147c63827eab3bfc12b9169ca24a6fed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e390f45a8413c7b10023ea0d6543ca0.png)
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解题方法
【推荐1】已知函数
,下列结论中正确 的是______ .(把所有正确序号都填上)
①
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的一个周期;②存在正数
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③
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在
内是增函数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/404d5918e479373ab500f0691df7ed2a.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35e2d7c958e99bcd9d7f251c19ee3544.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3bf4a061df1b809e76b7b958542d094.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d45408e946e5f8d84a82618d21ab73aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99074f989e74d5ff306b4b7b7a379c1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e88e93310e85e58313d4ec99a2cb0553.png)
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【推荐2】已知函数
,若
,则实数
的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/920855cc15c6da939e0778c799071438.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8fee4eadd0e762dba9f7fe74b5ac704.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
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解题方法
【推荐1】已知定义在
上的函数
,当
时,
,且对任意的实数
(
),都有
,若函数
有且仅有五个零点,则
的取值范围__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/556d7daf1c03292dd5ca1934e7aa0e84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5b1af83405d0098ee50062e0cedc40e.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
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