1引言文献[4]从一道2006年天津市高考数学压轴题出发,归结出此题中的椭圆是亚黄金椭圆.笔者读后受益匪浅,深受启发.大家都知道离心率等于黄金比(e=(5~(1/2)+1)/2)的双曲线叫做黄金双曲线,黄金双曲线有许多美好性质.我们的视野可以更广,我们完全有理由定义亚黄金双曲线.笔者通过类比和联想黄金双曲线和亚黄 1 Introduction The literature [4] from a 2006 Tianjin entrance math finale title, attributed to the ellipses in this question is sub-golden oval. I read benefited a lot, inspired by. We all know that eccentricity is equal to the ratio of gold ( The hyperbolic curve of e = (5 ~ (1/2) +1) / 2) is called the gold hyperbola, and the gold hyperbola has many beautiful properties. Our field of view can be wider and we have every reason to define the subgiant gold hyperbola. By analogy and associative gold hyperbolic and Asian yellow