设函数
是定义在R上的偶函数,且对任意的
恒有
,
已知当
时,
,则其中所有正确命题的序号是_____________ .
① 2是函数
的周期; ② 函数
在
上是减函数,在
上是增函数;
③ 函数
的最大值是1,最小值是0; ④ 当
时,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19744a533b09013096d129ae0bb0b5e0.png)
已知当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1376168658dbe7f5b7f4d75fb1db545a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98807082d02b1ac92a229453af14815e.png)
① 2是函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25f114df5ceabdb7e5fd3fdad4eaf056.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2be3ad3dd6803d92df6ff8a80cd35095.png)
③ 函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c2c8f91f560ff0c9f3aae0676fc383d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbf7ae2ecca6a1f945f61558486f7083.png)
14-15高三上·河南·期中 查看更多[1]
(已下线)2015届河南省名校高三上学期期中文科数学试卷
更新时间:2017-09-03 10:59:01
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【推荐1】有下列命题:①若四边形的四边相等,则这个四边形一定菱形;②在正方体
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【推荐1】已知
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上的函数,且满足
,对任意的自然数
都有![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7154d4109cc8c8e06ce0beecb46e2f0c.png)
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【推荐2】已知函数
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,则满足条件的最小的正实数
是
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解题方法
【推荐1】定义在
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【推荐2】已知定义在R上的奇函数,满足
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【推荐2】已知函数
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