设
表示不超过
的最大整数,如
,
.给出下列命题:
①对任意实数
,都有
;
②对任意实数
、
,都有
;③
;
④若函数
,当
时,令
的值域为A,记集合A的元素个数为
,则
的最小值为
.
其中所有真命题的序号是_________________ .
![](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/87ea02e718c638f94174db08de61ea3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b864f68977aaddd8435f1970f9886d4.png)
①对任意实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93a3db6bb2a0792a77c68bca20cfe1aa.png)
②对任意实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://img.xkw.com/dksih/QBM/2014/6/6/1571760007184384/1571760012591104/STEM/ee1452997b9949a3b274478e87ef2e5b.png?resizew=15)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6563c113e4801eecb133089940ab27c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52474631f4eb1a4a9eac5457ccfda5c8.png)
④若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0eefd22192af0913e00964249ccc2263.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dbca25e2ff608c466961dd9aea4e0db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5deee175c1448d248c4a6ece3e465da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47424eb68b9e8aba4ceb8309d82d32ec.png)
其中所有真命题的序号是
2014·四川资阳·一模 查看更多[2]
更新时间:2016-12-03 01:36:50
|
相似题推荐
填空题-单空题
|
适中
(0.65)
【推荐1】已知下列四个命题:
①若tan θ=2,则sin 2θ=
;
②函数f(x)=lg(x+
)是奇函数;
③“a>b”是“2a>2b”的充分不必要条件;
④在△ABC中,若sin Acos B=sin C,则△ABC是直角三角形.
其中所有真命题的序号是________ .
①若tan θ=2,则sin 2θ=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7294f5ae2a24ff42e84cd9773b2a7287.png)
②函数f(x)=lg(x+
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db4b20403630aa279a81f356e9e7b506.png)
③“a>b”是“2a>2b”的充分不必要条件;
④在△ABC中,若sin Acos B=sin C,则△ABC是直角三角形.
其中所有真命题的序号是
您最近一年使用:0次
填空题-单空题
|
适中
(0.65)
【推荐2】在下列命题中:①两个复数不能比较大小;②复数
对应的点在第四象限;③若
是纯虚数,则实数
;④若
,则
;⑤“复数
为纯虚数”是“
”的充要条件;⑥复数
;⑦复数
满足
;⑧复数
为实数
.其中正确命题的是______ .(填序号)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7eb7a280affd3ed08d08073bfb01747b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e71149302c37b4a40ffa125aea21133d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f54faa979e57d1ed35655f31c59241a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3612d008f91a5f75b61ae3c73c76ac81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d32d37e72181718279600fc43d5aa532.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2378a94ba5fce04e16b420079df7cf90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4d795709b0abcf47bceec2250f2f9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab0dbf0b12274a79bae1717c3d7a4f8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70c1e7d86796fa60cfd08eaa0fbfe10a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56e023230a194784824b98e3a76d18e5.png)
您最近一年使用:0次