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郁闷,三角形外心的公式一行都写不下,好BT的题目

Posted by sunmoonstar_love at 2005-07-20 18:46:44 on Problem 2504
In Reply To:还是解析几何吧,列出两个中垂线方程,然后用Cramer法则,手算好了一次过敲进去 Posted by:frkstyc at 2005-07-20 18:40:55


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