已知两点M(-2,0),N(2,0)点P满足向量PM点乘向量PN=12,则点P的轨迹方程为A.(x^2)/16+y^=1 B.x^2+y^=16 C.y^2-x^2=8 D.x^2+y^2=8

问题描述:

已知两点M(-2,0),N(2,0)点P满足向量PM点乘向量PN=12,则点P的轨迹方程为
A.(x^2)/16+y^=1 B.x^2+y^=16 C.y^2-x^2=8 D.x^2+y^2=8