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Let `f : R to R ` be a function defined by `f(x) = max. {x, x^(3)}`. The set of all points where `f(x) ` is NOT differenctiable is
(a) `{-1, 1}`
(b) `{-1, 0}`
(c ) `{0, 1}`
(d) ` {-1, 0, 1}`

A

{-1,1}

B

{-1,0}

C

{0,1}

D

{-1,0,1}

Text Solution

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The correct Answer is:
D
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