matlab解函数

>> A1=[2,3,1;1,4,3;3,1,2]

A1 =

     2     3     1
     1     4     3
     3     1     2

>> 
>> 
>> b=[22;26;28]

b =

    22
    26
    28

>> 
>> 
>> rref([A1,b])

ans =

     1     0     0     6
     0     1     0     2
     0     0     1     4

>>