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If [.] and {.} denote greatest and fract...

If `[.]` and `{.}` denote greatest and fractional part functions respectively and `f(x)={(x((e^([x]+|x|)-2)/([x]+{2x})),x!=0),(-1,x=0):}` then (A) `f(x)` is differentiable every where (B) `f(x)` is continuous at `x=0` (C) `f(x)` is continuous every where (D) `f(x)` is not differentiable at `x=0`

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