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已知F是椭圆＝1（a＞b＞0）的左焦点，A为右顶点，P是椭圆上的一点，PF⊥x轴，若|PF|＝|AF|，则该椭圆的离心率是（ ）
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高二下学期数学《》真题及答案
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已知椭圆+=1a>b>0点A.B1B2F.依次为其左顶点下顶点上顶点和右焦点若直线AB2与直线B1F
设椭圆中心在坐标原点焦点在x轴上一个顶点坐标为20离心率为.1求这个椭圆的方程2若这个椭圆左焦点为F
已知椭圆＋＝1a＞b＞0的一个顶点为A.01离心率为过点B.0－2及左焦点F.1的直线交椭圆于C.D
设F.1F.2分别是椭圆＋＝1的左右焦点P.为椭圆上一点M.是F.1P.的中点|OM|＝3则P.点到
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若圆心在x轴上的圆C同时经过椭圆Γ+=1a＞b＞0的左焦点F上顶点B和右顶点A则椭圆Γ的离心率为.
已知椭圆＋＝1a＞b＞0的一个顶点为A.01离心率为过点B.0－2及左焦点F.1的直线交椭圆于C.D
已知椭圆x2+=10
已知F1F2分别是椭圆+=1a>b>0的左右焦点A.B.分别是此椭圆的右顶点和上顶点P.是椭圆上一点
已知椭圆＋＝1a>0b>0的左焦点为F.右顶点为A.上顶点为B.若BF⊥BA则称其为优美椭圆那么优美
已知椭圆的左顶点为A.左焦点为F.点P.为该椭圆上任意一点若该椭圆的上顶点到焦点的距离为2离心率e=
如图已知椭圆＝1a>b>0F1F2分别为椭圆的左右焦点A.为椭圆的上顶点直线AF2交椭圆于另一点B.
如图已知F1为椭圆的左焦点A.B.分别为椭圆的右顶点和上顶点P.为椭圆上的点.若PF1⊥F1APO∥
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已知椭圆的左顶点为M.上顶点为N.右焦点为F.若则椭圆的离心率为.
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已知椭圆＋＝1a>b>0的一个顶点为A.01离心率为过点B.0－2及左焦点F.1的直线交椭圆于C.D
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