A. B is a square matrix of order n, and the determinant of a is not zero. It is proved that AB is similar to ba Linear algebra problem
If the determinant of a is not zero, then a is reversible
So a ^ (- 1) * AB * a = ba
AB is similar to ba
If the determinant of a is not zero, then a is reversible
So a ^ (- 1) * AB * a = ba
AB is similar to ba