題組內容

Problem 3 (13%)
下面的問題共有(a)~(C)三個子題:每個子題都只要寫出提問的答案即可(不須寫出答案背後的推導)。 Let a≠0 and , and let (A) denote the set of all eigenvalues of A .

(c) If Ω_a. is an idempotent matrix, then what are all possible values of det A ? (5%)