問題詳情

2.選出在x = 0處連續的函數﹕　
(A)f (x) = x5 - 2x3 + 7　
(B)f (x) = | x |　
(C)f(x)=

　
(D)f (x) = [x]﹒

參考答案

答案：A
難度：適中0.5
統計：A(3),B(0),C(0),D(1),E(0)