申論題

Problem 3 (25%) 本問題共有(a)~(d)四個子題,除了(b)子題裡的 discus 之外,每個題都只要寫出提問的答案即 可(不須寫出答案背後的推導)。

(c) Consider the inner product space V = (,〈●_，●〉), where 〈A,B〉:= tr(A^TB) for A and B in . Describe S^⊥ as the span of a set of orthonormal vectors in . (7%)