2011北京东城高三二模数学第六题.6.已知双曲线x2/a2 - y2/b2=1,过其右焦点且垂直于实轴的直线与双曲线交于M,N两点,O为坐标原点,若OM⊥ON,则双曲线的离心率为?为什么不能设MF1=3a MF2=a来计算啊...
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![2011北京东城高三二模数学第六题.6.已知双曲线x2/a2 - y2/b2=1,过其右焦点且垂直于实轴的直线与双曲线交于M,N两点,O为坐标原点,若OM⊥ON,则双曲线的离心率为?为什么不能设MF1=3a MF2=a来计算啊...](/uploads/image/z/2999049-33-9.jpg?t=2011%E5%8C%97%E4%BA%AC%E4%B8%9C%E5%9F%8E%E9%AB%98%E4%B8%89%E4%BA%8C%E6%A8%A1%E6%95%B0%E5%AD%A6%E7%AC%AC%E5%85%AD%E9%A2%98.6%EF%BC%8E%E5%B7%B2%E7%9F%A5%E5%8F%8C%E6%9B%B2%E7%BA%BFx2%2Fa2+-+y2%2Fb2%3D1%2C%E8%BF%87%E5%85%B6%E5%8F%B3%E7%84%A6%E7%82%B9%E4%B8%94%E5%9E%82%E7%9B%B4%E4%BA%8E%E5%AE%9E%E8%BD%B4%E7%9A%84%E7%9B%B4%E7%BA%BF%E4%B8%8E%E5%8F%8C%E6%9B%B2%E7%BA%BF%E4%BA%A4%E4%BA%8EM%2CN%E4%B8%A4%E7%82%B9%2CO%E4%B8%BA%E5%9D%90%E6%A0%87%E5%8E%9F%E7%82%B9%2C%E8%8B%A5OM%E2%8A%A5ON%2C%E5%88%99%E5%8F%8C%E6%9B%B2%E7%BA%BF%E7%9A%84%E7%A6%BB%E5%BF%83%E7%8E%87%E4%B8%BA%3F%E4%B8%BA%E4%BB%80%E4%B9%88%E4%B8%8D%E8%83%BD%E8%AE%BEMF1%3D3a+MF2%3Da%E6%9D%A5%E8%AE%A1%E7%AE%97%E5%95%8A...)
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