在椭圆中为椭圆上的一点过坐标原点的直线交椭圆于两点其中在第一象限过作轴的垂线垂足为连接 1若直线与的斜率均存在问它们的斜率 Template




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tomski在椭圆中为椭圆上的一点过坐标原点的直线交椭圆于两点其中在第一象限过作轴的垂线垂足为连接 1若直线与的斜率均存在问它们的斜率 coloring