待定系数法 x^2/a^2+y^2/b^2=1
4/a^2+1/(3*b^2)=1
1/(3*a^2)+1/(2*b^2)=1
1/a^2=3/34 1/b^2=33/17
椭圆方程为 3x^2/34+ 33y^2/17=1
并且a^2=34/3>17/33=b^2 焦点在x轴