设A点的座标是(x1,y1),B点的座标是(x2,y2)x1+x2=2y1+y2=2x1^2/4+y1^2/3=1x2^2/4+y2^2/3=1(2-y1)^2/4+y1^2/3=1,3(4-4y1+y1^2)+4y1^2=12 -12y1+7y1^2=0,y1=12/7或y1=0同样的,y2=12/7或y2=0剩下的自己做吧...