1. The problem statement, all variables and given/known data What are the basis for the row space and null space for the following matrix? Find the dimension of RS, dim of NS. [1 -2 4 1] [3 1 -3 -1] [5 -3 5 1] 2. Relevant equations dim RS + dim NS = # of columns 3. The attempt at a solution I reduced the matrix into row echelon form and tried to determine everything, but in vain.