名校
1 . 如图,在凸四边形
中,
,
,
,
.设
.
![](https://img.xkw.com/dksih/QBM/2016/11/16/1573151326691328/1573151332982784/STEM/ec9df2404c3d495b8c3b41cf39a5121f.png)
(1)若
,求
的长;
(2)当
变化时,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ced06b71073e1bb777f326f06016ce17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f656e1d1f68954e5f06de8958f6a9310.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62b3bb79b07f60dec5c2ab1107da2ba2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c07df5ad00c7959a7584f04eec20045f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f27b8f4ddb7db4cba6754ae9dd4c1ea5.png)
![](https://img.xkw.com/dksih/QBM/2016/11/16/1573151326691328/1573151332982784/STEM/ec9df2404c3d495b8c3b41cf39a5121f.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f3609b3b292aa619b5c52d5ef9de5d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26ab55147ca5c0f958af43b0637ee31b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
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2016-12-05更新
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4卷引用:【全国百强校】江西省南昌市第二中学2019届高三第六次考试数学(理)试题
12-13高一下·湖北·期中
名校
2 . 设△ABC的内角
的所对的边
成等比数列,则
的取值范围是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/939f4d7cd59fa423bd749821d5631137.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2016-12-02更新
|
1219次组卷
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5卷引用:2013-2014学年江西省吉安一中高一下学期第一次段考数学试卷
(已下线)2013-2014学年江西省吉安一中高一下学期第一次段考数学试卷黑龙江省大庆市铁人中学2018-2019学年高一下学期期中数学试题辽宁省辽宁师范大学附属中学2023年高三下学期5月月考数学试题(已下线)2012-2013学年湖北省部分重点中学高一下学期期中联考文科数学试卷(已下线)专题 12等比数列性质及应用归类(3)