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試卷名稱：無年度 - 主題課程_向量空間：向量空間和子空間#107951
科目：主題課程專用
Which of the following is a vector space?
(A) P={p|p is a polynomial in of any order}
(B)
={p|pis a polynomial in of exactly th order}
(C){T| T：
is a linear transformation}
(D) The set of all matrices of which the sum of all entries is zero, i.e.,
.
(E) The set of all square matrices with trace 1 , i.e.,
.