I got a question about Linear Algebra. I got a matrix N that has size 6*9. Now i need to find a matrix M (that is 4*9) for which nul M=row N. The only helpful theorem i can think of is that (Row N)perp=Nul A, but even then i just don't know how to start.
Any help on how to solve this question qould be appreciated. Thanks in advance.