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if f(x)=(x^2-4)|(x^3-6x^2+11x-6)|+x/(1+|...

if `f(x)=(x^2-4)|(x^3-6x^2+11x-6)|+x/(1+|x|)`then set of points at which the function if non differentiable is

A

{-2,2,1,3}

B

{-2,0,3}

C

{-2,2,0}

D

{1,3}

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The correct Answer is:
D
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