椭球面 ●椭球面标准方程 ce, 1 (a,b,c>0) x=a·sinp·cos8 0≤0<2π y=b·sinp·sin0 0≤p≤π z=C·C0S0 4 4 椭球面 2 22 2 22 1 xyz abc ++= (,, ) abc > 0 sin cos sin sin cos x a y b z c ϕ θ ϕ θ ϕ  =⋅ ⋅   =⋅ ⋅  = ⋅  0 2 0 θ π ϕ π ≤ < ≤ ≤  椭球面标准方程