名校
解题方法
1 . 在①
;②
是函数
的一个零点;③已知函数
,且
.从三个条件中任选一个,补充在下面的问题中,并加以解答:
已知
的内角
,
,
所对的边分别是
,
,
,且
为锐角.若___________,且
,试判断
的形状.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fc32716f9c28dd101beea57e885a86d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f50fedddd548a7d66dac3ac999913097.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c79e7d8f19cbd8c261961cb0266cd61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37fac83d4b24b900a6953996575d643b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70f3f5d5a56750984f1fbc44ff4c2122.png)
已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/194741f4d2ae7ee44cafca780361446a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca84eed7b66bb74a9b4c448d5853b6b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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2021-08-16更新
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