一类平面方程的几何意义

Geometric Interpretation on a Planar Equation

根据点P(x0,y0,z0)与椭球面x2/a2+y2/b2+z2/c2=1的三种位置关系,给出平面方程x0x/a2+y0y/b2+z0z/c2=1的三种几何意义.

Three geometric interpretations of the planar equationx^2/a^2＋y^2/b^2＋z^2/c^2=1= 1 aregiven based on the three positions of the point P（zo ,yo ,zo ） relative to the ellipsoid x0x/a^2＋y0y/b^2＋y0y/b^2＋z0z/c^2=1.