函数f(x)=sin2(x+
)-sin2(x-
), x
(
,
)的值域是_______ .
![](https://img.xkw.com/dksih/QBM/2014/2/14/1571509205221376/1571509210529792/STEM/73481c6f8cd440ddb71c3b7e640f9434.png?resizew=17)
![](https://img.xkw.com/dksih/QBM/2014/2/14/1571509205221376/1571509210529792/STEM/73481c6f8cd440ddb71c3b7e640f9434.png?resizew=17)
![](https://img.xkw.com/dksih/QBM/2014/2/14/1571509205221376/1571509210529792/STEM/5bbe649ea5eb44f098aa880d3b16ccf6.png?resizew=13)
![](https://img.xkw.com/dksih/QBM/2014/2/14/1571509205221376/1571509210529792/STEM/2a18a0bde44348bf908ee973cec2b95b.png?resizew=17)
![](https://img.xkw.com/dksih/QBM/2014/2/14/1571509205221376/1571509210529792/STEM/4e4c3c602f4643cfba2f65e21575ff7b.png?resizew=17)
13-14高三上·四川眉山·阶段练习 查看更多[2]
更新时间:2016-12-02 17:06:05
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解题方法
【推荐1】已知点P为椭圆
上一个动点,点A的坐标为
,则
的最小值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfe909e7d30a29a55c2c329f38983524.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c76c41773aae617db1c0cc04bcf836f.png)
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您最近一年使用:0次
填空题-单空题
|
较易
(0.85)
【推荐2】给出下列命题:
①存在实数
,使
; ②函数
是偶函数;
③若
是第一象限的角,且
,则
;
④直线
是函数
的一条对称轴;
⑤函数
的图像关于点
成对称中心图形.
其中正确命题的序号是__________ .
①存在实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e66a029eaf8f30ae7372fca82d508ff4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6d7c6da85a9540ea284f239f14d6d32.png)
③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ba83980a38c5e1fe4be841bc8a51d1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/238e08fc74ae3a5c65985e625b0c75e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3226de881cd3372a35147f7a0a9f000a.png)
④直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12407802e022e4dbc1a0636085e4c387.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d7ea2c97b86b401400ae4cd1cc2fa87.png)
⑤函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a2a1d10b3867bae7be968416970e944.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9dec7943d36e904bf94a555493e131b5.png)
其中正确命题的序号是
您最近一年使用:0次