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#d56041ef-560c-4d22-a862-63efa5e3b921中上解答题直线的方程解析几何

2023高考圆锥曲线解答(压轴候选)

20.【解答】解:(1)若 m =2,则a2a2=4 ,b2b2=3,∴a =2 ,c = =1,∴e = =;