Question

For x∈R, f(x) = |log2 – sinx| and g(x) = f(f(x)), then:
(1) g is differentiable at x = 0 and g'(0) = –sin(log2)

(2) g is not differentiable at x = 0

(3) g'(0) = cos(log2)

(4) g'(0) = –cos(log2)

Answer 1

Answer:

the answer is (3)

Answer 2

Answer:

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