纵观近几年的各地高考,经常出现含等式的向量问题.这类问题一般属于中档题,但很多学生都怕做这种题目,碰到这种问题大多是空白.究其原因,是学生对平面向量基本定理理解得不深刻,对系数λ,μ的含义不是很清楚,导致对等式c=λa+μb的处理,缺乏必要的方法和技巧;另外,处理这类问题时往往还需要数形结合,综合运用平面几何知识、解三角形知识、函数知识等加以解决,而学生这方面的综合能力比较欠缺,思维比较单 Throughout the college entrance examination in recent years, there are often vector problems with equations. These problems are generally mid-range questions, but many students are afraid to do this kind of problem, most of the problems encountered are blank. The reason is The students do not understand the basic theorem of plane vector very well. The meaning of the coefficients λ and μ is not very clear, which leads to the lack of the necessary methods and techniques to deal with the equation c = λa + μb. In addition, students often deal with such problems Need to form a combination, the comprehensive use of plane geometry knowledge, solution triangle knowledge, function knowledge to be solved, while students in this area is relatively lacking in comprehensive ability, a single thinking