問題詳情

9. Let A be an n x n matrix whose (i，j) component is aij. The trace of A is defined as trA =

 Let B and C be n x n matrices. Which of the following statements are true?
(A) tr(AB)= tr(BA).
(B) tr(ABC)=tr(CBA).
(C) tr(ATB)=tr(ABT).
(D) tr(A+B)=(trB)(trA).
(E) None of the above. 

參考答案

答案：[無官方正解]
難度：計算中-1
書單：沒有書單，新增