已知函数
,给出下列命题,其中正确命题的序号是_______ .
①
,
是
的两个不相等的根,则
;
②
是函数
的对称中心;
③
也是函数的对称中心;
④
是函数
的对称轴.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8b1857463e3597d915f5b0a8596c09d.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/515f88ff8fa1cad560307bd2b2e13fcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46c35c41a0bff4cdcf29e212da1219ae.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/393b3bacc16708ca73eff1451cb429d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23587086dbec342edb72e1bb46e8e894.png)
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e89a24d9bf531014f0e124358c4a2ffc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
更新时间:2020-03-16 15:21:37
|
相似题推荐
填空题-单空题
|
适中
(0.65)
解题方法
【推荐1】已知函数
,现有下列四个命题:
①
的最小正周期为
;②曲线
关于点
对称;
③若
,则
;④若
,则
.
其中所有真命题的编号是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f42837ceb2d5943e7f598e8ccd074598.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86ebba6ed1add0fe647c0226614b9290.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c52273a1af76b9ae9de76b168edc8f2.png)
③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4af2315fc7f6a230c8f65053365e6f8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09e925272c9644a0f31cd79e7631b607.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ac41ba95f28b467e4634a7a82c4687f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84cd84b37327d3add34e5add36640e38.png)
其中所有真命题的编号是
您最近一年使用:0次
填空题-单空题
|
适中
(0.65)
解题方法
【推荐2】给出函数(1)
;(2)
;(3)
,其中最小正周期是
的函数是_____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/634dec73d22132315a8194c199e4bd90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02b8914ff013382e979be4afb858a3de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c28cf4505e17cd2218c5ad07b838bc32.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1ad72d7565699d1ebb741eb0ce12bac.png)
您最近一年使用:0次
填空题-单空题
|
适中
(0.65)
【推荐1】给出下列五个命题:
①函数y=tanx的图象关于点(kπ+
,0)(k∈Z)对称;
②函数 f ( x )=sin|x|是最小正周期为π的周期函数;
③函数
的最小值为-1;
④设θ为第二象限的角,则tan
>cos
,且sin
>cos
;
⑤若
是第三象限角,则点
在第二象限.
其中正确的命题序号是________________________.
①函数y=tanx的图象关于点(kπ+
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1ad72d7565699d1ebb741eb0ce12bac.png)
②函数 f ( x )=sin|x|是最小正周期为π的周期函数;
③函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f97c89b747c41611d35f29d1347f8e3.png)
④设θ为第二象限的角,则tan
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a16d92d3ccdf0ecfaa43eb8ed62ae5a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a16d92d3ccdf0ecfaa43eb8ed62ae5a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a16d92d3ccdf0ecfaa43eb8ed62ae5a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a16d92d3ccdf0ecfaa43eb8ed62ae5a4.png)
⑤若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf8f47140d2ce96acbdab1151e1a9164.png)
其中正确的命题序号是________________________.
您最近一年使用:0次