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已知椭圆C:=1(a>0,b>0)的左右焦点分别为F1,F2,O为坐标原点,P为第二象限内椭圆上的一点,且∠F1PF2=30°,直线PF2交y轴于点M,若|F1F2|=2|OM|,则该椭圆的离心率为...
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高三下学期数学《》真题及答案
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设椭圆的左右焦点分别为F1F2右顶点为A上定点为B已知 设P为椭圆上异于其顶点的一点以线段
已知m>1直线x-my-m2/2=0椭圆C://x2/m2+y2=1F1F2分别为椭圆C的左右焦点.
已知椭圆中心在原点焦点在x轴上离心率点F1F2分别为椭圆的左右焦点过右焦点F2且垂直于长轴的弦长为1
已知F.1F2分别是椭圆E.:+y2=1的左右焦点F1F2关于直线x+y-2=0的对称点是圆C.的一
已知点P.是椭圆上一点为两焦点且若点P.到两焦点的距离分别为6和8求椭圆的方程.
已知椭圆C+=1a>b>0的左右焦点分别为F1F2离心率为e.直线ly=ex+a与x轴y轴分别交于A
已知椭圆+=1的左右焦点分别为F1F2点Px0y0为椭圆上的动点当∠F1PF2为钝角时点P.的横坐标
已知椭圆C.的两焦点分别为F.1﹣20F.220长轴长为6.1求椭圆C.的标准方程2已知过点02且斜
已知椭圆的左右焦点分别为F.1F.2点P.为椭圆上一点且∠PF1F.2=30°∠PF2F.1=60°
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.
已知椭圆C+=1a>b>0的左右焦点分别为F1F2若椭圆C上恰好有6个不同的点P使得△F1F2P为等
椭圆a>b>0的左右顶点分别为
B.,左右焦点分别为F.
1
、F.
2
,若|AF
1
|,|F
1
F.
2
|,|F
1
|成等差数列,则此椭圆的离心率为( ) A.
B.
已知椭圆+=1a>b>0的左右焦点分别为F1F2短轴的两个端点为A.B.且四边形F1AF2B是边长为
已知椭圆的左右焦点分别为F1F2过F1且倾角为45°的直线l交椭圆于
,
两点,对以下结论:①
的周长为8;②
;③椭圆上不存在相异两点关于直线l对称;其中正确的结论有( )个A.3B.2
1
0
如图设椭圆+=1的左右焦点分别为F1F2过焦点F1的直线交椭圆于Ax1y1Bx2y2两点若△ABF2
已知椭圆+=1a>b>0的左右焦点分别为F1-c0F2c0.若椭圆上存在点P.使得=则该椭圆的离心率
设椭圆的左右焦点分别为F1F2右顶点为A上定点为B已知 求椭圆的离心率
设椭圆的轨迹方程为 焦点分别为F1-10F210直线l:x=a2交x轴于点A且
已知椭圆+=1的左右焦点分别为F1F2点P.在椭圆上若PF1=4则点P.到右准线的距离是.
设椭圆的轨迹方程为 焦点分别为F1-10F210直线l:x=a2交x轴于点A且
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