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1861 days ago by matrix

A=matrix(QQ, 3, 6, [2, 5, 7, 9, 10, 11, 2, 3, 1, 2, 4, 8, 8, 6, 2, 1, 2, 3]) print A.echelon_form() 
       
[    1     0     0  -3/4  -3/2 -13/4]
[    0     1     0   7/8   9/4  21/4]
[    0     0     1   7/8   1/4  -5/4]
[    1     0     0  -3/4  -3/2 -13/4]
[    0     1     0   7/8   9/4  21/4]
[    0     0     1   7/8   1/4  -5/4]
A=matrix(QQ, 3, 6, [2, 5, 7, 9, 10, 11, 2, 3, 1, 2, 4, 8, 8, 6, 2, 1, 2, 3]) print A.rank() print A.right_nullity() 
       
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