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本文通过对近几年高考中以向量为背景,求圆中最值的部分考题进行梳理整合,展开对题组的共性与个性、考查意图的迁移变化、求解思路与方法、题型推广与创新等方面的探究.试着从一个侧面揭开高考命题的一缕面纱,感悟高考命题的一点规律,来启迪、引领我们高考备考的方式、方法,提高我们高考备考的针对性.一、给定圆心与半径的圆的割(切)线长的最值(过圆心)考题1(2013年湖南理科卷第6题)
In this paper, through the background of vector in the college entrance examination in recent years, combing and merging some of the questions of the most value in the circle, the commonness and personality of the group of questions, the migration of the examination intention, the ideas and methods, the promotion and innovation of the questions Other aspects of inquiry. Try to open a veil of the college entrance examination proposition from a side, to perceive a point of the college entrance examination proposition, to enlighten, guide our college entrance exam preparation methods, methods, and improve our college entrance exam preparation. The maximum value (over-center) of the circle’s cut (cut) line length of the center of the circle and the radius. Question 1 (2013 Hunan Science Vol. 6)