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Ch-4.1-exam-15-new-오충헌
2137 days ago by matrix
A=matrix(QQ, 3, 3, [1, 1, 2, 2, 3, 3, 4, 4, 5]) Ai=A.inverse() print "det(A)=", A.det() print "det(A^(-1))=", Ai.det()
det(A)= -3 det(A^(-1))= -1/3
det(A)= -3 det(A^(-1))= -1/3