# LA+CH7+EX6+Solved+by+주영은

## 2059 days ago by math2013

A = matrix(6,5,[1,0,2,0,0,0,1,-1,0,0,0,0,0,1,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,]) print A.rref() print A.rank()
 [ 1 0 2 0 0] [ 0 1 -1 0 0] [ 0 0 0 1 0] [ 0 0 0 0 1] [ 0 0 0 0 0] [ 0 0 0 0 0] 4 [ 1 0 2 0 0] [ 0 1 -1 0 0] [ 0 0 0 1 0] [ 0 0 0 0 1] [ 0 0 0 0 0] [ 0 0 0 0 0] 4