1 . 已知函数
,有下列四个结论:①函数
的最小正周期为
;②函数
图象的对称中心为
;③函数
图象可由
图象向左平移
个单位长度得到;④函数
的一个单调增区间为
.其中所有正确结论的序号为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89a39fce182c0beb3841bf146f9172c4.png)
![](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/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9986e6910612f72c93e2719a5d59f1bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a3b449ffe9403b417444df7bd6c523a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d88591679796c52024d11c4de641bdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/964a0410d904ebae9f1eaaedb383a947.png)
A.①② | B.②④ | C.②③ | D.③④ |
您最近一年使用:0次
2 . 关于下列结论:
①函数
是偶函数;
②直线
是函数
的图象的一条对称轴;
③将函数
的图象向左平移
个单位后,所得图象的函数解析式为
;
④函数
的图象关于点
成中心对称.
其中所有正确结论的序号为______ .
①函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70af0c9274e304ab55f7cb398efb9b0a.png)
②直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24db7b603aebdee8e298d1fe49c848e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/716090207dde423adc51e3ae47c47969.png)
③将函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/716090207dde423adc51e3ae47c47969.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d88591679796c52024d11c4de641bdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e7571f888f9cc741f08979c2aed0465.png)
④函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46f3e5d2b268ef2578debedd4c9fce0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e738bce4fa92616b5be79e7c605d8547.png)
其中所有正确结论的序号为
您最近一年使用:0次
3 . 已知函数
,给出下列四个说法:
;
函数
的周期为
;
在区间
上单调递增;
的图象关于点
中心对称
其中正确说法的序号是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987517758fad59f6f695761deb2a5ebd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1422128b8c8f71b0ff5ff99e184255a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b7a1b84aa7a5ee24ab89c4ea81bf524.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c650fe55b7603f106c53ca2423451c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69c13a09123ae873e0b0501aaecc507e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed2d1ecae9c649cc3c89f9ce0c063208.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2d99960d918b68c1ac12236a1783619.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/393b02b815fb39466a38772d4ef0eac6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6dd0f14c3e71b3d44a74e7438dd1586.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0052868039b72522257eb4337cf078d6.png)
其中正确说法的序号是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11d71379442f28c038d367d49422cf90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987517758fad59f6f695761deb2a5ebd.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次