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[几何] 一道关于直线的填空题

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敬畏数学 posted 2015-3-10 11:59 |Read mode
Last edited by 敬畏数学 2015-3-10 13:36高一期末考试:
过点P(2,1)的直线与x,y轴分别交于A,B两点,O为原点,求△AOB的周长最小值。(试题中提示考虑△AOB的旁切圆)

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longzaifei posted 2015-3-10 12:26
这题论坛里面讨论过!或者是老论坛!

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original poster 敬畏数学 posted 2015-3-10 12:52
帮忙找下?谢谢

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Tesla35 posted 2015-3-10 12:55

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original poster 敬畏数学 posted 2015-3-10 13:08

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original poster 敬畏数学 posted 2015-3-10 13:09
纠正原题错误是周长的最小值。

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kuing posted 2015-3-10 13:48
FAQ……

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original poster 敬畏数学 posted 2015-3-10 14:01
人教网BBS高手牛啊!

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其妙 posted 2015-3-10 23:39
那个网都没去了哟

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