已知双曲线中心在原点O,焦点在X轴上,两条渐近线分别为L1 L2.经过右焦点F垂直于L1的直线分别交L1 L2于A,两点,已知向量OA、AB、OB的模成等差数列、且向量BF与FA同向.(1) 求双曲线的离心率(2
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![已知双曲线中心在原点O,焦点在X轴上,两条渐近线分别为L1 L2.经过右焦点F垂直于L1的直线分别交L1 L2于A,两点,已知向量OA、AB、OB的模成等差数列、且向量BF与FA同向.(1) 求双曲线的离心率(2](/uploads/image/z/10193058-18-8.jpg?t=%E5%B7%B2%E7%9F%A5%E5%8F%8C%E6%9B%B2%E7%BA%BF%E4%B8%AD%E5%BF%83%E5%9C%A8%E5%8E%9F%E7%82%B9O%2C%E7%84%A6%E7%82%B9%E5%9C%A8X%E8%BD%B4%E4%B8%8A%2C%E4%B8%A4%E6%9D%A1%E6%B8%90%E8%BF%91%E7%BA%BF%E5%88%86%E5%88%AB%E4%B8%BAL1+L2.%E7%BB%8F%E8%BF%87%E5%8F%B3%E7%84%A6%E7%82%B9F%E5%9E%82%E7%9B%B4%E4%BA%8EL1%E7%9A%84%E7%9B%B4%E7%BA%BF%E5%88%86%E5%88%AB%E4%BA%A4L1+L2%E4%BA%8EA%2C%E4%B8%A4%E7%82%B9%2C%E5%B7%B2%E7%9F%A5%E5%90%91%E9%87%8FOA%E3%80%81AB%E3%80%81OB%E7%9A%84%E6%A8%A1%E6%88%90%E7%AD%89%E5%B7%AE%E6%95%B0%E5%88%97%E3%80%81%E4%B8%94%E5%90%91%E9%87%8FBF%E4%B8%8EFA%E5%90%8C%E5%90%91.%EF%BC%881%EF%BC%89+%E6%B1%82%E5%8F%8C%E6%9B%B2%E7%BA%BF%E7%9A%84%E7%A6%BB%E5%BF%83%E7%8E%87%EF%BC%882)
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