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20 0 0年全国高考数学文理科压轴题第(2 2 )题都是以双曲线为背景的试题 .它们都与下述的有心圆锥曲线命题有关 .命题 :设有心圆锥曲线中心在原点 ,焦点在ｘ轴上 ,Ｃ、Ｄ是曲线上关于ｙ轴对称的两点 ,它们与焦点Ｆ的连线交曲线于Ｅ、Ｇ ,Ｅ、Ｇ分有向线段ＦＣ 、ＦＤ 所成的定
The 20th year of mathematics and sciences in the National College Entrance Examination for Mathematics and Sciences subjects (2 2 ) is based on hyperbolic background questions. They are all related to the following concentric conic propositions. Proposition: Center of the conic heart is at the origin, focus On the x-axis, C and D are two points on the curve that are symmetric about the y-axis. Their intersections with the focal point F intersect with curves E, G, and E, G divide the directed segments FC, FD into