向量作为工具性知识已列入中学教材之中,其应用价值已被广大师生认可．用向量知识解题,方法新颖、运算简捷,是启迪学生思维的有效途径之一．但向量是以几何的形式出现的,给人的感觉是在几何中应用广泛,其实用向量来解决代数中的一些问题也很方便．下西就介绍这方面的应用． Vector as instrumental knowledge has been included in the middle school textbooks, its application value has been recognized by the majority of teachers and students. Using vector knowledge to solve problems, new methods, and simple operations are one of the effective ways to enlighten students’ thinking. However, the vector appears as a geometric form, giving the impression that it is widely used in geometry. In fact, it is also very convenient to solve some problems in algebra with vectors. Described in this area under the application.