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original poster: 乌贼

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其妙 posted 2013-12-18 22:37
回复 20# 乌贼
那就旋转变换后再三角换元吧

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original poster 乌贼 posted 2013-12-18 22:42
回复 21# 其妙
复杂化

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其妙 posted 2013-12-19 17:26
回复  其妙
复杂化
乌贼 发表于 2013-12-18 22:42
如果为了追求方法的多样性,只有被迫了!

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isee posted 2013-12-22 21:57
回复  其妙
其他方法弄得我头晕,不管了。道题代数方法太多,几何法估计没人鸟
上一个,由题意知 ...
乌贼 发表于 2013-12-14 03:56
好,圆上一点到两定点距离和最大的推广。
bbs.pep.com.cn/forum.php?mod=viewthread&tid=881388

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其妙 posted 2013-12-27 00:15
回复 24# isee
看看能否链接图片?
怎么说明在圆$x^2+y^2=25$上,$(0,5)$到$(3,-4)$和$(-3,-4)$两个点的距离和最大?

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hbghlyj posted 2025-3-21 04:08
其妙 发表于 2013-12-26 16:15
回复 24# isee
看看能否链接图片?
怎么说明在圆$x^2+y^2=25$上,$(0,5)$到$(3,-4)$和$(-3,-4)$两个点的距 ...
图片失效了!

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