17) A, B and C are 2x2 matrices, and C is invertible, and ABC = BAC. Three of the following four equations must be true.
Posted: Tue May 10, 2022 6:51 am
MULTIPLE CHOICE
17) A, B and C are 2x2 matrices, and C is invertible, and ABC = BAC. Three of the following four equations must be true. Which one of the following equations is NOT necessarily true? a) AB = BA b) CAB = C-'BA c) ABCAT = BACAT d) AC = CA
17) A, B and C are 2x2 matrices, and C is invertible, and ABC = BAC. Three of the following four equations must be true. Which one of the following equations is NOT necessarily true? a) AB = BA b) CAB = C-'BA c) ABCAT = BACAT d) AC = CA