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Which of the following functions is differentiable at x = 0?

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Which of the following functions is differentiable at x = 0?

(a) cos (|x|) + |x|

(b)  cos (|x|) - |x|

(c) sin (|x|) + |x| 

(d) sin (|x|) - |x|

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1 Answer

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Best answer

Correct option (d) sin (|x|) - |x|

Explanation :

Therefore, (d) is the answer

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