12-13高三上·云南西双版纳·期末
名校
1 . 已知
,
,且
.
(I)将
表示成
的函数
,并求
的最小正周期;
(II)记
的最大值为
,
、
、
分别为
的三个内角
、
、
对应的边长,若
且
,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e66022fa9552b816b44ffaa7493eebf5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/501d56e9bff159daeac611540242d2b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f3401a0f05b6fe79c2b2969b95fbbec.png)
(I)将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(II)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://img.xkw.com/dksih/QBM/2013/4/12/1571183655829504/1571183661449216/STEM/b195d2400107438b99143a6ed76fc9c5.png)
![](https://img.xkw.com/dksih/QBM/2013/4/12/1571183655829504/1571183661449216/STEM/c25111573b9a44358a215c68aa766e45.png)
![](https://img.xkw.com/dksih/QBM/2013/4/12/1571183655829504/1571183661449216/STEM/a044e8b2453a4556a05b49781af98381.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd936a2405709574af0a73543d94ad9c.png)
![](https://img.xkw.com/dksih/QBM/2013/4/12/1571183655829504/1571183661449216/STEM/82033a40997b43fd8354eb541b4f4be0.png)
![](https://img.xkw.com/dksih/QBM/2013/4/12/1571183655829504/1571183661449216/STEM/b88785e1de1f4efaa95075a80e0f94ce.png)
![](https://img.xkw.com/dksih/QBM/2013/4/12/1571183655829504/1571183661449216/STEM/b5d7dc240bc04453b06346799f6825af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cae3b61f7328adee0f2ceec415a846.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69225cfdfbc0a9a1ccfdd15c46353b8f.png)
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2016-12-02更新
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4卷引用:2013届云南景洪第一中学高三上期末考试文科数学试卷
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