1.本单元知识点串讲向量由于具有几何形式和代数形式的“双重身份”,使它成为中学数学知识的一个交汇点,成为联系多项内容的媒介.在引入向量的坐标表示后,可以实现向量运算代数化,将数与形有机地结合起来,许多几何证明问题就可以通过代数(向量)运算得以解决,这也是我们学习向量 1. Since the unitary knowledge of this unit has a “dual identity” of geometric form and algebraic form, it becomes a meeting point for middle school mathematics knowledge and becomes a medium for associating multiple contents. After introducing vector coordinate representation, it can be realized. Vector operations are algebraic and combine numbers and shapes organically. Many geometrical proof problems can be solved by algebraic (vector) operations. This is also our learning vector.