设椭圆的标准方程是x^2/a^2+y^2/b^2=1a^2-b^2=4经过(5/2,-3/2)代入得b^2*25/4+a^2*9/4=a^2*b^225b^2+9a^2=4a^2b^2把a^2-b^2=4代入得25b^2+9(4+b^2)=4(4+b^2)b^2令a^2=m,b^2=n则25n+36+9n=16n+4n^2解得=b^2=6a^2=10椭...