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2013年中考结束以后,各地试题出现了一大批优秀题目.“双点运动问题”就是优秀命题百花园中的一朵奇葩,以其独有的魅力闪烁出耀眼光芒.因为它考查了学生转化思想、类比思想、分类讨论思想、数形结合思想等数学思想,用方程、方程组建模是常用的方法之一,几何、代数、三角多个知识点综合运用,再由双点运动的灵活性注定了它在考题中的地位,因此备受命题者青睐,此类题目多用作提高区分度的综合题出现.例如哈尔滨市第27题,吉林省第25题等.下面从教材原题作为引题开始,把2013年双点在三角
After the mid-term exam in 2013, a large number of excellent subjects appeared in the test questions around the world. “The” double-point exercise problem "is a wonderful flower in the excellent proposition of a hundred flower gardens, with its unique charm that shines brightly because it examines the students It is one of the most commonly used methods to model with equations and equations. The comprehensive application of multiple knowledge points such as geometry, algebra and trigonometry, and then by two-point motion Flexibility is destined to its position in the exam, so much favored by the proponents, such topics are used to improve the degree of more comprehensive questions appear, for example, 27 questions in Harbin, Jilin Province, 25 questions. As a quotation begins, put 2013 double-point in the triangle