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Ò»¸öÍÖÔ² (ˮƽ»ò´¹Ö±·ÅÖÃ) ÓÉÏÂÃæµÄ·½³Ì¸ø³ö

a(xx 0) 2+b(yy 0) 2=c,

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ax 2+by 2+cx+dy+e=0,

ÆäÖÐ, µã (x 0,y 0) ) ÊÇÍÖÔ²ÖÐÐÄ, ÍÖÔ²Á½ÖáµÄ±ÈÖµÓÉ a ºÍ b µÄ±Èֵȷ¶¨(ÈçºÎ¼ÆËã?).

´ËÔÚÏßÁ·Ï°¿ÉÒÔÏȸø³öÍÖԲͼÏó, È»ºóÈÃÄãÑ¡ÔñÆä·½³Ì, »òÕßÏȸø³ö·½³ÌÈ»ºóÈÃÄãÑ¡ÔñÆäͼÏó.

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