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通过对近年高考妙用圆性质求向量最值的部分考题,进行进行梳理整合,展开对题组的相关性、共性与个性特征、考查意图的迁移变化、求解的思路方法、题型推广与创新等方面探究.试想从一个侧面揭开高考命题的一缕神秘面纱,感悟一点高考命题规律,来启迪引领高考备考的方式方法,提高我们高考备考的针对性与高效性.一、用定圆的割线最值考题1(2013年湖南)已知a,b是单位向量,a,b=0.若
Through examining some of the most valuable part of the college entrance examination magical use of the quality of the recent college entrance examination, carry out combing integration, expand the relevance of the problem group, commonality and personality traits, examining the transfer of intention changes, ways and means of solving, problem type promotion and innovation To explore the mystery of a college entrance examination from a single point of proposition mystery, perception of a college entrance examination propositions, to enlighten the way to lead the college entrance examination preparation, to improve our college entrance examination preparation for the relevance and efficiency. The most value of the line exam 1 (Hunan 2013) is known a, b is a unit vector, a, b = 0. If