设f1,f2分别是椭圆E:x²/a²+y²/b²=1(a>b>0)的左右焦点过f1斜率为1的直线i与E相交于A,B两点,且AF2,AB,BF2成等差数列 1.求E的离心率 2.设点p(0,-1)满足PA=PB,求E的方程
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![设f1,f2分别是椭圆E:x²/a²+y²/b²=1(a>b>0)的左右焦点过f1斜率为1的直线i与E相交于A,B两点,且AF2,AB,BF2成等差数列 1.求E的离心率 2.设点p(0,-1)满足PA=PB,求E的方程](/uploads/image/z/5185355-59-5.jpg?t=%E8%AE%BEf1%2Cf2%E5%88%86%E5%88%AB%E6%98%AF%E6%A4%AD%E5%9C%86E%EF%BC%9Ax%26%23178%3B%2Fa%26%23178%3B%2By%26%23178%3B%2Fb%26%23178%3B%3D1%EF%BC%88a%3Eb%3E0%EF%BC%89%E7%9A%84%E5%B7%A6%E5%8F%B3%E7%84%A6%E7%82%B9%E8%BF%87f1%E6%96%9C%E7%8E%87%E4%B8%BA1%E7%9A%84%E7%9B%B4%E7%BA%BFi%E4%B8%8EE%E7%9B%B8%E4%BA%A4%E4%BA%8EA%2CB%E4%B8%A4%E7%82%B9%2C%E4%B8%94AF2%2CAB%2CBF2%E6%88%90%E7%AD%89%E5%B7%AE%E6%95%B0%E5%88%97+1.%E6%B1%82E%E7%9A%84%E7%A6%BB%E5%BF%83%E7%8E%87+2.%E8%AE%BE%E7%82%B9p%EF%BC%880%2C-1%EF%BC%89%E6%BB%A1%E8%B6%B3PA%3DPB%2C%E6%B1%82E%E7%9A%84%E6%96%B9%E7%A8%8B)
设f1,f2分别是椭圆E:x²/a²+y²/b²=1(a>b>0)的左右焦点过f1斜率为1的直线i与E相交于A,B两点,且AF2,AB,BF2成等差数列 1.求E的离心率 2.设点p(0,-1)满足PA=PB,求E的方程
设f1,f2分别是椭圆E:x²/a²+y²/b²=1(a>b>0)的左右焦点
过f1斜率为1的直线i与E相交于A,B两点,且AF2,AB,BF2成等差数列 1.求E的离心率 2.设点p(0,-1)满足PA=PB,求E的方程
设f1,f2分别是椭圆E:x²/a²+y²/b²=1(a>b>0)的左右焦点过f1斜率为1的直线i与E相交于A,B两点,且AF2,AB,BF2成等差数列 1.求E的离心率 2.设点p(0,-1)满足PA=PB,求E的方程