23. (3%) Which of the following statemen..-阿摩線上測驗
23. (3%) Which of the following statements is true?
(A) Let S be a subset of a vector space. Then S =
(B) Let V be a subset of Rn, and if V is orthogonal to W, then is orthogonal to .
(C) If u and v are vectors in Rn, and if distance from u to v equals the distance from u to -v, then
and v are orthogonal.
(D) If u, v and w are vectors in Rn, and if u is orthogonal to v +w, then u is orthogonal to v and w.