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平面向量数量积的运算是向量知识中的重要内容之一,是高考、数学竞赛考试的热点问题,特别是数量积的变形更能有效简洁的解答向量类型的数学问题,同时对解题教学及发散学生思维能力有很好的效果.
The calculation of the number of plane vectors is one of the most important parts in vector knowledge. It is a hot issue in entrance exams and math competitions. In particular, the deformation of quantity products is more efficient and concise to solve mathematical problems of vector types. At the same time, Diverging students thinking ability has a very good effect.