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)。
(2) Now lot T = be a subspace of V and let P be any vector of S. What is the distance of P to T? (7%)