在
中,角
所对的边分别为
,且
.
(1)求
的最小值;
(2)已知
,求边
及
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](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/91d2af701c19452141882037c21aca04.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d049a551a9f4d4aee75e5150d9aad897.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4098bf7a90700092b664de9d7df1a3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
更新时间:2023-08-08 15:58:32
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解答题-问答题
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适中
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【推荐1】已知函数
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(1)判断函数
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(2)若
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适中
(0.65)
名校
解题方法
【推荐1】在
中,角
所对的边分别为
点
在一次函数
图像上.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/5/27/5ec726c0-a255-4d05-ba26-4755adfbf877.png?resizew=149)
(1)求
的值;
(2)如图所示,点
是边
上靠近
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/832a6ae04b25ef0896bd607cdcda60ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80909e59fb368f456575d59cdb8cde76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bc1cdc051f8059b140d9ea7b099dafd.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/5/27/5ec726c0-a255-4d05-ba26-4755adfbf877.png?resizew=149)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5201fc26d013f6fb889933c0e32f5c53.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4609f537f52f50addadee6d353e15bab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4d29f9cb3d877031aa578042aec421.png)
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【推荐2】①
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,在这两个条件中任选一个,补充在下面问题中的横线上,并给予解答.
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注:如果选择条件①和条件②分别解答,按第一个解答计分.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6de1d395e6c48c0676a1488a299479d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f12c618da29d3e2e341a8c2dc974a6fd.png)
问题:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/671905afec001edf9df224a06629f77d.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5daacfca03b233bee267ed7410cd43c7.png)
注:如果选择条件①和条件②分别解答,按第一个解答计分.
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【推荐1】已知△ABC的内角A,B,C所对边分别为a、b、c,且2acosC=2b-c.
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【推荐2】在
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcdb7a488910743dc5c63afb394b87e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/318e70ba7c958a7007654635f6451bf4.png)
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