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平面向量是新教材改革增加的内容之一,近几年全国使用新教材的高考试题逐渐加大了对这部分内容的考查力度,向量作为工具可以帮助考生分析解决一些相关问题。《向量中一道例题的推广及应用》主要是针对平面内三点共线中的一些问题以及在此基础上类“共线”问题,对这两类问题的解决有意想不到的效果。下面通过实例来对理论进行说明,望对大家有所帮助。一、例题的证明及结论的应用
Plane vector is one of the new content of the reform of new textbooks, in recent years, the national college entrance examination using new textbooks gradually stepped up the examination of this part of the content, the vector as a tool to help candidates analyze and solve some related issues. The promotion and application of an example in a vector mainly focuses on some problems in the three-point in-plane collinearity and on the basis of which the category “collinearity ” problem is solved. The solution to these two types of problems has an unexpected effect. The following examples to illustrate the theory, hope to be helpful to everyone. First, the proof of the example and the application of the conclusion