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Topic:
Span(A)=Span(B)
Replies:
3
Last Post:
Oct 22, 2007 7:59 PM




Re: Span(A)=Span(B)
Posted:
Oct 22, 2007 3:40 PM


On Oct 22, 8:14 am, "A.E lover" <aelove...@gmail.com> wrote: > Hi all, > > A and B are two matrices with the same rank and same size. Is that > enough to say that span(A)=span(B)? thank you.
When you are asking questions of this type I recommend that you think of a concrete example. In fact, try to think of a simple concrete example. For example A= [1 1 1]  1x3 of rank 1 B= [1 2 3]  1x3 of rank 1
or
A=[1 1 1]^T  3x1 of rank 1 B=[1 2 3]^T  3x1 of rank 1
I'm not sure what question you're asking, but whatever question it is these examples should give you an answer.



