新教材中向量在高一和高二 (下 )中有专门论述 ,在高二 (上 )解析几何中逐步渗透向量方法 ,既能复习旧知 ,又能衔接后面内容 ,可防止内容脱节 .所以在解析几何中适当地渗透向量方法就显得尤为重要和关键 .下面结合高二 (上 )教材谈几点认识 .1　在推导公式中使用向量方法点到直 In the new textbook, the vectors are specifically discussed in the first and second year (lower), and they gradually penetrate the vector method in the second year (upper) analytical geometry. They can not only review the old knowledge, but also connect the following contents, preventing the content from being disjointed. Therefore, the analytical geometry Appropriate infiltration vector method is particularly important and critical. The following combination of high school (on) textbooks to talk about a few points. 1 In the derivation formula using vector method to point straight