characteristic curves
the solution surface as being made up of a family of curves on each of which the direction
of the tangent to the curve at each point is given by the set of drieciton numbers(a,b,c)
a(x,y,u)Ux + b(x,y,u) Uy = c(x,y,u)
of the tangent to the curve at each point is given by the set of drieciton numbers(a,b,c)
a(x,y,u)Ux + b(x,y,u) Uy = c(x,y,u)
posted on 2007-11-15 03:51 cloudseawang 阅读(219) 评论(0) 编辑 收藏 举报
