对任意实数
,
表示不超过
的最大整数,如
,
,关于函数
,有下列命题:
①
是周期函数;
②
是偶函数;
③函数
的值域为
,
;
④函数
在区间
内有两个不同的零点,
其中正确的命题为__ (把正确答案的序号填在横线上).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2ab85825d4a002600ca41bd3cd2ee7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff1d01770395a039cda175d3a7f30f2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bc39f7fbb2ea42632166c5f83541db5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb522eeb1ec66d99bf5156b65b78d192.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
③函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb1d1fd1576780d39b00f5208142e8ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/659ce142c5578c660dcadacb81b8d7c2.png)
④函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c283f4594a9ab512f34400de5aee112e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cbfe8e7fb253685e0e50bae0c5482314.png)
其中正确的命题为
更新时间:2020-11-02 13:17:27
|
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【推荐1】定义在R上的函数
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______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/249a976e88133f3b3733f09137cf5c42.png)
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您最近一年使用:0次
填空题-单空题
|
较易
(0.85)
解题方法
【推荐2】设函数
满足条件
,
,
,且在区间
上,
其中集中
.给出下列四个结论:
①
;
②函数
的值域为
;
③函数
在
上单调递增;
④函数
在
上单调递减.
其中所有正确结论的序号是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ad5fe274cfc8da2dacfb65801f344ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b47144278d622b666fcff69aee5abc5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c25fb0c3e1b6ef211233170b9aa9001.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/304226ca50149b49702928e44d565964.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ca07d3a7922058d6873f8c278f9517b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c0ab8d3b4f144b1436a8c3cf2ac8dc5.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01251d44e688d6f61d3542ed374f3298.png)
②函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/304226ca50149b49702928e44d565964.png)
③函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a630b0c9e1bf2ca2969098af972f5e8.png)
④函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c343089f513fa02fb97e8479f0ccc72c.png)
其中所有正确结论的序号是
您最近一年使用:0次
填空题-单空题
|
较易
(0.85)
解题方法
【推荐1】已知
的定义域为
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,当
时,
,则
=_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275815073d040d04fe4820f9841b78d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f7dbb416ec1ff1984a724a4f48bf692.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09c7bba069a33fd4d8d2ac6449148da9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1faf370d8708b83d3d26fe02440c6326.png)
您最近一年使用:0次
填空题-单空题
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较易
(0.85)
【推荐2】已知
,
,方程
在[0,1]内只有一个根
,则
在区间[0,2016]内根的个数_________ .
![](https://img.xkw.com/dksih/QBM/2016/8/17/1572979272105984/1572979278127104/STEM/51884865d8f64d97b21971cebbe60b9e.png?resizew=124)
![](https://img.xkw.com/dksih/QBM/2016/8/17/1572979272105984/1572979278127104/STEM/d45853f578d844c6b70be619efe3f570.png?resizew=107)
![](https://img.xkw.com/dksih/QBM/2016/8/17/1572979272105984/1572979278127104/STEM/e3c27d53d93544b6831ef577b835ac80.png?resizew=60)
![](https://img.xkw.com/dksih/QBM/2016/8/17/1572979272105984/1572979278127104/STEM/51430eaf5d684c138dcaebc924e339b7.png?resizew=41)
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您最近一年使用:0次