Book
Linear Algebra
Author
Gilbert Strang
Edition
F=matrix([[1,2,-2,0],[2,3,-4,1],[-1,-2,0,2],[0,2,5,3]]) print F G=F.echelon_form() print G.det() H=matrix([[2,-1,0,0],[-1,2,-1,0],[0,-1,2,-1],[0,0,-1,-2]]) print H I=H.echelon_form() print I.det() H.swap_rows(2,3); H
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