f(x) = cos (|x| + [x]), then (A) f is continuous at x = 1/2 (B) f is continuous at x = 0 (C) f is differentiable in (–1, 0) (D) f is differentiable in (0, 1)

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Question

f(x) = cos (|x| + [x]), then

(A) f is continuous at x = 1/2
(B) f is continuous at x = 0
(C) f is differentiable in (–1, 0)
(D) f is differentiable in (0, 1)

Prashant Kotian · Accepted Answer

Correct answer:

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