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試卷名稱：109年 - 109 國立中山大學_碩士班招生考試_電機系(乙組)：工程數學乙#106088
年份：109年
科目：中山◆電機◆工程數學乙
19. Consider the linear equation Ax = b with A ∈ 
. Which of the following statements are true?
(A) If rank
= m, then there exists at least one solution.
(B) Ifrank
= n, then there exists exactly one solution.
(C) Ifrank
= n, then the column vectors of A are linearly independent.
(D) Ifn ＞ m, then there exists at least one solution.
(E) Ifm ＞n, then there exists at most one solution.