Set, Relation and FunctionHard

Question

If f : R → R, f(x) = max. {x, x3}, then the set of the points where f is not differentiable is

Options

A.{-1, 1}
B.{- 1, 0}
C.{0, 1}
D.{- 1, 0, 1}

Solution


x = {-1, 0, 1}

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