Ch-4-Prob-6-New-김준하

A=matrix(QQ, 3, 3, [1, 2, -1, 4, -2, 3, -2, 0, 1]) B=matrix(QQ, 3, 3, [1, 2, 0, 3, 1, 1, 0, 1, 0]) print A.det() print A.transpose().det() AB=A*B print B.det() print AB.det() print A.inverse().det() 

-18
-18
-1
18
-1/18

-18
-18
-1
18
-1/18