Log in to edit a copy.
Download.
Other published documents...
Ch-4-Prob-12-New-김준하
2276 days ago by matrix
A=matrix(QQ, 2, 2, [-1, 1, 2, 1]) print A.det() B=A.inverse() y=matrix(QQ, 2, 1, [2, -10]) By=B*y print By
-3 [-4] [-2]
-3 [-4] [-2]
A=matrix(QQ, 3, 3, [1, 1, 1, 4, 2, 1, 9, 3, 1]) print A.det() B=A.inverse() y=matrix(QQ, 3, 1, [3, 5, 5]) By=B*y print By
-2 [-1] [ 5] [-1]
-2 [-1] [ 5] [-1]