Which of the following function is not differentiable at $x = 0 ?$ $f (x) = min {x, sin x}$ $f (x) = {0, x \geq 0 x^{2}, x < 0$ (c) $f (x) = x^{2} s g n (x)$

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Which of the following function is not differentiable at

x = 0 ?

f (x) = min {x, sin x}

f (x) = {0, x \geq 0 x^{2}, x < 0

(c)

f (x) = x^{2} s g n (x)

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Question Text

Which of the following function is not differentiable at

x = 0 ?

f (x) = min {x, sin x}

f (x) = {0, x \geq 0 x^{2}, x < 0

(c)

f (x) = x^{2} s g n (x)

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