試卷名稱:110年 - 110 國立政治大學_碩士班暨碩士在職專班招生考試_統計所:基礎數學#105296
年份:110年
科目:研究所、轉學考(插大)-基礎數學
8. Let A be an m x n matrix. Which of the following statements are true?
(A) nullity( A ) + rank( A )=n.
(B) rank( A )=rank(AT).
(C) If m = 7 and n = 5, then rank( A ) is at most 5.
(D) Suppose that m = n. Then, "A is singular"
"A has rank n".
(E) None of the above.