已知F1,F2分别是椭圆x²/a²+y²=1的左右焦点(a>1) 若椭圆上存在一点M满足向量F1M·向量F2M=0(1)求a的最小值(2)设A(0,1) B(0,-1) 过椭圆的右顶点C的直线L与椭圆交于点D(D不同于C)交y轴
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/19 14:23:03
![已知F1,F2分别是椭圆x²/a²+y²=1的左右焦点(a>1) 若椭圆上存在一点M满足向量F1M·向量F2M=0(1)求a的最小值(2)设A(0,1) B(0,-1) 过椭圆的右顶点C的直线L与椭圆交于点D(D不同于C)交y轴](/uploads/image/z/3704860-28-0.jpg?t=%E5%B7%B2%E7%9F%A5F1%2CF2%E5%88%86%E5%88%AB%E6%98%AF%E6%A4%AD%E5%9C%86x%26%23178%3B%2Fa%26%23178%3B%2By%26%23178%3B%3D1%E7%9A%84%E5%B7%A6%E5%8F%B3%E7%84%A6%E7%82%B9%28a%3E1%29+%E8%8B%A5%E6%A4%AD%E5%9C%86%E4%B8%8A%E5%AD%98%E5%9C%A8%E4%B8%80%E7%82%B9M%E6%BB%A1%E8%B6%B3%E5%90%91%E9%87%8FF1M%C2%B7%E5%90%91%E9%87%8FF2M%3D0%281%29%E6%B1%82a%E7%9A%84%E6%9C%80%E5%B0%8F%E5%80%BC%EF%BC%882%EF%BC%89%E8%AE%BEA%280%2C1%29+B%EF%BC%880%2C-1%EF%BC%89+%E8%BF%87%E6%A4%AD%E5%9C%86%E7%9A%84%E5%8F%B3%E9%A1%B6%E7%82%B9C%E7%9A%84%E7%9B%B4%E7%BA%BFL%E4%B8%8E%E6%A4%AD%E5%9C%86%E4%BA%A4%E4%BA%8E%E7%82%B9D%EF%BC%88D%E4%B8%8D%E5%90%8C%E4%BA%8EC%EF%BC%89%E4%BA%A4y%E8%BD%B4)
xUN"I~M6[;&k@!\-yXwٹCq`QF} B+^ajp2!ݛO~lQHD!G5Rğ~:>8~EZgDmΌx)ELUy%<)\Az[1
}=H1wJA)u\ -'ĴHC-ixiJO$14a%Gi(Kw]}6oU0a726b$Se ,,19HLqp8rJkQ0[=]R?t&gRݲwfsFzՁ7Z}ݕTP+|-$
kekˆj=