矩阵的秩求法——只用初等行变换变成阶梯型

矩阵的秩求法——只用初等行变换变成阶梯型

 

 

 

 

>> 
>> A1=[1,-1,2,1,0;2,-2,4,-2,0;3,0,6,-1,1;0,3,0,0,1]

A1 =

     1    -1     2     1     0
     2    -2     4    -2     0
     3     0     6    -1     1
     0     3     0     0     1

>> 
>> 
>> 
>> 
>> 
>> rank(A1)

ans =

     3

>> 
>>