1. Answer True or False for each statement below:
(b)If f '(x) exists but f '(x) does not exist, then we say that f(x) is differentiable at a "on the left".
阿摩線上測驗
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阿摩線上測驗
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f '(x) exists but 
f '(x) does not exist, then we say that f(x) is differentiable at a "on the left".