研究所、轉學考(插大)◆計算機數學題庫下載題庫

25.(3%) Let S=spanf{(1 3 1 1)^T,(1 1 1 1)^T,(-1 5 2 2)^T} be a subspace of R⁴. Suppose w₁= , is aothonormal basis of S. Please find the value of (a₁ + a₂ + a₃ + a₄)+ (b₁ +b₂ +b₃ +b₄)+(c₁+c₂ +c₃ +c₄)?
(A) 5
(B) 6
(C) 7
(D) 8