Suppose that A is a 6 times 8 matrix that has an echelon for
     Suppose that A is a 6 times 8 matrix that has an echelon form with one zero row. Find the dimension of the row space of A.  Find the dimension of the column space of A.  Find the dimension of the null space of A. 
  
  Solution
dimension of of the row space of A = 5
dimension of the column space of A = 5
dimension of the null space of A = 6

