1 . 在
中,点D在边
上,
,则
的长为_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a927ec05ab640bfad0fc5d3b5662454f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://img.xkw.com/dksih/QBM/2021/7/2/2755755764703232/2782031010807808/STEM/b738019fe085481897b048bb02012aaa.png?resizew=217)
您最近一年使用:0次
2021-08-08更新
|
667次组卷
|
6卷引用:2016届广东省广州市普通高中毕业班综合测试一文科数学试卷
2 . 已知实数
满足不等式组
,则
的取值范围是___________.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0fffbec1fe851795dfdd448bf0d165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a23e347bd749928384fc28852db2bd1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec428431f4cf06c0fad9c1798cb430c9.png)
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3 . 已知
的面积为
,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41db498f025052df2dbb1e50ab672675.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bb5b12692517a39c320f99a479eb055.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d11a5a756d8fdd7b294c4f5fd63467b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41db498f025052df2dbb1e50ab672675.png)
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4 . 已知数列
满足
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49653bd3e78f5f5c7a00ed1e6fad8805.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62e567d7e9761951a266953c8d5042ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2efb9c54016521fc4d7405b89e7f607.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49653bd3e78f5f5c7a00ed1e6fad8805.png)
您最近一年使用:0次
2016-12-04更新
|
484次组卷
|
2卷引用:2017届广东省惠州市高三第一次调研理科数学试卷
5 . 设二次函数
的值域为
,则
的最大值为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ddf206356b524cd4fa473881fb987d96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60cce332317884d04b38b1ebe8a50d18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/471ea695f15ed92d2f60582dc612db78.png)
您最近一年使用:0次
6 . 设
满足约束条件
,则
的最大值是________.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0fffbec1fe851795dfdd448bf0d165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/089ff5fde4d72caf7ffa2a7a579ca855.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e6dfad5c144afe8b9e18f998f3a0dd6.png)
您最近一年使用:0次
7 . 设实数
,
满足约束条件
则
的取值范围是 .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/102b177da18761ca156d2fb094deb3c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05a685635bbf874fa92d123cde3becf2.png)
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解题方法
8 . 在△ABC中,a、b、c分别为角A、B、C所对的三边长,若
,则角B的大小为____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d5573312264b80e1ca8eb851a30e71e.png)
您最近一年使用:0次
9 . 设变量x,y满足约束条件
,则
的最小值为_______ .
![](https://img.xkw.com/dksih/QBM/2015/10/20/1572259713720320/1572259719798784/STEM/f0d7cb5858ba46619ce4adbb51892496.png?resizew=97)
![](https://img.xkw.com/dksih/QBM/2015/10/20/1572259713720320/1572259719798784/STEM/8e6745efa801479b85b9510c42ca2821.png?resizew=69)
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10 . 已知等差数列
满足
,则![](https://img.xkw.com/dksih/QBM/2015/10/20/1572259713720320/1572259719774208/STEM/b1720e40b73744c4b9c5ca67adddd887.png?resizew=113)
________ .
![](https://img.xkw.com/dksih/QBM/2015/10/20/1572259713720320/1572259719774208/STEM/81c63df70e04471391156d3370f2feda.png?resizew=32)
![](https://img.xkw.com/dksih/QBM/2015/10/20/1572259713720320/1572259719774208/STEM/3046e3534ec54805986933df0929d788.png?resizew=113)
![](https://img.xkw.com/dksih/QBM/2015/10/20/1572259713720320/1572259719774208/STEM/b1720e40b73744c4b9c5ca67adddd887.png?resizew=113)
您最近一年使用:0次