对称中心为原点O,焦点在X轴上,离心率1/2e=c/a=1/2 a=2c,b^2=a^2-c^2=3a^2/4椭圆方程:x^2/a^2+y^2/(3a^2/4)=1x^2/a^2+4y^2/3a^2=1点(1,3/2)在该椭圆上1/a^2+9/3a^2=1a^2=4b^2=3方程:x^2/4+y^2/3=1...