(1/2)ab=√3........①; e=c/a=1/2..........②由①得ab=2√3, 即有a²b²=12............③;由②得 a=2c=2√(a²-b²),去根号得 a²=4(a²-b²),即有3a²=4b², 故b²=(3/4)a²..........④;将④代入③式得 (3/4)a^4=12,a^4=16,故a²=4;代入④式得b²=3;故椭圆方程为:x²/4+y²/3=1.
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x²/4+y²/3=1