JEE Math Practice Question
Let f : R $$ \to $$ R be differentiable at c $$ \in $$ R and f(c) = 0. If g(x) = |f(x)| , then at x = c, g is :
- A.differentiable if f '(c) = 0
- B.differentiable if f '(c) $$ \ne $$ 0
- C.not differentiable
- D.not differentiable if f '(c) = 0
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