胡落水05052021-02-28TA获得超过498个赞关注解:x^2/6+y^2/2=1x^2/3-y^2=1连成方程组解得P点()F1(-2,0),F2(2,0)c^2=6-2=4(向量PF1*向量PF2)/(|PF1|*|PF2|)=