(x-3)^2+(y-2)^2=3
åå¿ï¼3ï¼2ï¼ï¼åå¾=â3
(k^2+1)x^2-(4k+6)x+10=0
â³=(4k+6)^2-40(k^2+1)>=0
6k^2-12k+1<=0ï¼
x1+x2=(4k+6)/(k^2+1)ï¼x1·x2=10/(k^2+1)
ä¸ç¹(xï¼y)
ä¸é¢ä¸¤è¡æ¯ç±å·²ç¥çæ¡ååºï¼åºé¢è
ç该æ»
x=(x1+x2)/2=(2k+3)/(k^2+1)=3/2+(-3k^2+4k+3)/(2k^2+2)ï¼
y=(y1+y2)/2=k(2k+3)/(k^2+1)=1+(2k^2+6k-2)/(2k^2+2)ï¼
(x-3/2)^2+(y-1)^2=13/4 (计ç®ç¨å¤æï¼ç»æ没é)
å®ä¹åç±å¤å«å¼å¯æ±
çå¾
继ç»
温馨提示:答案为网友推荐,仅供参考