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[几何] 三角形外接圆的面积最小值

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敬畏数学 posted 2016-5-23 15:23 |Read mode
抛物线y=x^2上有一点A(1,1),B、C两点在此抛物线上,AB与BC互相垂直,求三角形ABC的外接圆最小面积。
此题通过解析法算,可以得到答案,但计算量不小,尤其是求最小值时,有点勉强,看有无几何法?

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original poster 敬畏数学 posted 2016-5-24 11:08
回复 1# 敬畏数学
结果是C(-1,1)应该有简单做法。

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游客 posted 2016-5-24 13:33
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