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Re:我初步想法是这样的：

Posted by MasterLuo at 2009-10-14 13:12:27
In Reply To:Re:一个平面几何问题，求高手的解答？ Posted by:blue_mary at 2009-10-14 13:07:05 
求角范围就是求极值点，先把线段分成一些段（可接受范围内），求出极值可能落在哪些段内，再把这些段细分，一直到求出极值为止……再取极大极小值。
数学弱，不会用纯数学方法。
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