題組內容
第二部分:非題(不需計算過程·答以“F”表示“错”,“T”表示“對”)
(c) If f : (-1,1) → 
is continuous at x = 0, then f is differentiable at x = 0.
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(c) If f : (-1,1) → is continuous at x = 0, then f is differentiable at x = 0.