1 . (1)已知:
,
,证明:
;
(2)已知
,证明:
,并类比上面的结论,写出推广后的一般性结论(不需证明).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc93e18ce083103103113d6d6d845618.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12b40b1544e62be8b9e9f4dc9f2c0c74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18e0989f71c74fdfd6f97d8c9f481ba1.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6fea464f1b120d173d5070b2899bac4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5bb8a8776010a3eb1f502dbc28537f6.png)
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2016-12-04更新
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3卷引用:河南省开封市五县联考2019-2020学年高二下学期期末考试数学(理)试题