椭圆：x²/27+y²/36=1a²=36,b²=27c²=a²-b²=36-27=9那么双曲线c²=9设双曲线方程：y²/a’²-x²/b‘²=1代入点坐标16/a'²-15/b'²=1a'²+b'
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