I honestly don't even know where to start with this question. The question is: Give an example of a span of three vectors u, v, w in four dimensions that corresponds to a plane thru the origin? I know that the span of the vectors is the set of linear combinations of the vectors. I don't understand how to write a span of some vectors that happen to span four dimensions. I looked through all my notes and my linear algebra book and I can't seem to figure it out, so I don't have any work to sure because I can't figure out where to start. Any help would be appreciated.