If f(x) = {{:(-x, " when "x lt 0),(x^(2)...

If `f(x) = {{:(-x, " when "x lt 0),(x^(2), " when "0 le x le 1),(x^(3) -x+1, " when " x gt 1):}`
then `f` is differentiable at

A

x=1

B

x=0

C

x=0,1

D

none of these

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The correct Answer is:

A

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