[考古] 一致連續的問題
f(x)=1+x+x^2+x^3+... 下列區間和者不為一致連續?
(A) 0≦x≦0.5
(B) -0.9999<x<0.9999
(C) 0<x<0.9999
(D) 0<x<0.5
(E) 0<x<1
答案 是E
我想問問 B的答案不行嗎?
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