题型:单选题
难度:0.85
引用次数:1342
题号:12445615
已知
为定义在R上的偶函数,当
时,恒有
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38f0e9c04402a0ffdaa25c3e3c82c7dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59f197d2776fabcd64bf5391b8e234d0.png)
A.![]() |
B.![]() |
C.![]() |
D.![]() |
更新时间:2021-03-05 16:00:05
|
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解题方法
【推荐1】函数
的图象大致为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c8fe9299356bb1311cf2cef1c15fc19.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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解题方法
【推荐2】若
是
上周期为5的奇函数,且满足
,
,则
等于( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/249a976e88133f3b3733f09137cf5c42.png)
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A.-2 | B.2 | C.-1 | D.1 |
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【推荐1】函数
的图像大致为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c19f54cfea4e3ea9968fcc26b1ac740.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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【推荐2】已知函数
,则不等式
的解集为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/605a0b7f42e101b8627143012fd4797e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/227c89651a3e427d0e15e592237df70b.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐3】已知正数
满足
,则
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
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A.7 | B.8 | C.9 | D.10 |
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【推荐1】已知偶函数
的定义域为
,且在
上为增函数,则( )
①
;②
;③
;④
在
上为减函数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad2edd8edcb21bd41584daf9bb95a5c7.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8bb398270cd7329daacb2b398b9ced9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d3dfb9993f0852e443ea196e974013d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be563d659402fc924d9354dc2d6d7d64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d562dc22dfb3b81d0c3f88b54d063c2f.png)
A.①③ | B.①④ | C.②③ | D.②④ |
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【推荐2】 已知定义在
上的函数
满足下列条件:①对任意的
都有
;②若
,都有
;③
是偶函数,则下列不等式中正确的是
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A.![]() | B.![]() |
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