6 Consider the function f : R R with period 2π such that π+x if - < x < 0, f(x) = sin x if 0≤ x ≤π, and consider its Fourier series Sf(x). Then (A) S(0)=0 (B) S,(0) = π (C) S,(0) =π/2 (D) S, is not convergent in x = 0

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