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设ABCD坐标:A(0,4),B(0,0),C(4,0),D(4,4);
D在AB上滑动,BE=1,求CF的最小值。
CF最短距离是= 2.500000000113179
CF最短距离的参数索引值= 25982
D点坐标=0.0,2.5981
E点坐标=1,0.0
F点坐标=2.750020601572351,2.1650754037844377
  :lol:lol
CF最长距离是= 3.605551275463989
CF最长距离的参数索引值= 1
D点坐标=0.0,0.0
E点坐标=1,0.0
F点坐标=0.5000000000000002,0.8660254037844387
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python3.7程序运行 27.8839910030365 秒。
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