椭圆的标准方程教案

椭圆的标准方程和几何性质标准方程eq \f(x2,a2)＋eq \f(y2,b2)＝1(a>b>0)eq \f(y2,a2)＋eq \f(x2,b2)＝1(a>b>0)图　形 INCLUDEPICTU