借助行列式,给出了直线间的位置关系及直线束的方程,这也更好地表述并回答了吕林根等所著教材中的一个习题.
By virtue of determinants,this paper gives the position relations between two lines and establishes the equations of line beams,which formulates better and answers the Problem 7 from the book by Lu Lingen,et al.