問題詳情

7. 下列何者為奇函數(odd function)：
(A) sin(x)
(B) x3
(C) 0
(D) (sin x)2

參考答案

用户評論

【Chia-Chung We】評論

A function f is said to be an odd function if -f(x) = f(-x), for all value of x .(A) sin(-x) = -sin (x) =>odd function(B) (-x)3 =-(x)3=>odd function(C)0=>contants(D)  (-sin x) 2 =(-1)2(sin x) 2= (sin x) 2 =>even functionAnawers：(A)(B)