写出适合下列条件的椭圆的标准方程.(1)a = 根号6,b =1,焦点在X轴上.(2)焦点坐标为(0,-4),(0,4),a = 5(3)焦点在X轴上,焦距等于4,并且经过点P(3,-2倍的根号六).(4)a+c=10,a-c=4
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(1)a = √6,b =1,焦点在X轴上. （x^2)/6 + y^2 = 1 (2)焦点坐标为(0,-4),(0,4),a = 5 (y^2)/25 + (x^2)/9 = 1(3)焦点在X轴上,焦距等于4,并且经过点P(3,-2√6) (x^2)/36 + (y^2)/32 = 1 (4)a+c=10,a-c=4 (x^2)/49 + (y^2)/40 = 1 或(y^2)/49 + (x^2)/40 = 1