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文[1]给出了2002年“通讯杯”高中数学综合应用能力竞赛试题的解答题第11小题,推广到双曲线、椭圆的结论。本文将其再推广,给出更具一般性的结论。命题1 设抛物线C的方程为y~2=2px(p>
The paper [1] gives the eleventh answer to the questions of the 2002 “communication cup” high school mathematics comprehensive application ability contest question, and generalizes to hyperbola and ellipse. This article will re-promote it and give more general conclusions. Proposition 1 Let the equation of parabola C be y~2=2px(p>