1.本单元重、难点分析本单元的重点:向量的概念,向量的几何表示和坐标表示,向量的线性运算,两个向量共线的充要条件,平面向量的数量积,向量垂直的条件.本单元的难点:向量的概念及运算法则,平面向量的数量积的应用,平面向量基本定理的理解 1. The unit is heavy, difficult to analyze the focus of this unit: the concept of vector, the geometric representation of the vector and coordinate representation, the vector of linear operations, the two vector collinearity necessary and sufficient conditions, the number of planar vector product, vector vertical conditions The Difficulties of the Unit: The Concept and Algorithm of Vector, The Application of Quantity Product of Plane Vector, The Understanding of Fundamental Theorem of Plane Vector