向量模是向量中的一个重要概念,也是高考中经常考查的重点内容之一.可是,对于向量模的性质及其应用,在教材中未集中系统的介绍,影响对“模”的深刻理解和灵活应用,以至经常失去获得最优解题方法的机会.因此,重视扩展和深化向量模的学分,实为必要.有关向量模的性质,一般分散在教材的例、习题之中,应将分散的知识进行归纳整理,系统分 Vector mode is an important concept in vector and is also one of the most important contents in college entrance examination.However, the nature of vector mode and its application have not been systematically introduced in the textbooks, and have a profound impact on “modulo” Understanding and flexible application, and often lose the opportunity to obtain the optimal solution method .Therefore, emphasis on expanding and deepening the vector module credits, it is necessary .For the nature of the vector module, generally scattered in the textbook examples, exercises should be The scattered knowledge will be summarized, the system points