[理工] 工程數學 線代
1.For any n × n symmetric matrix H
(A) Eigenvectors corresponding to distinct eigenvalues of H are orthogonal
(B) Distinct eigenvectors of H are orthogonal
(C) Distinct columns of H are orthogonal
(D) Distinct rows of H are orthogonal
(E) None of the preceding statements are true
答案似乎是E
但小弟覺得是A得樣子
2. Ture or Flase
Suppose that T is an n × n square matrix. Then T is a scalar multiple of
the n × n identity matrix if and only if ST = TS for every n × n square
matrix S.
3.
If T is a linear transformation from R4 to R2 such that
dim(N(T))=2, then T is surjective.
想問一下surjective 這個單字 是onto的意思嗎???
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