Question: Prove that converges for every x (0, 2Ï) and every ak 0. What happens when x = 0? o0 cost

Prove that
Prove that converges for every x ˆˆ (0, 2Ï€) and every

converges for every x ˆˆ (0, 2Ï€) and every ak †“ 0. What happens when x = 0?

o0 cost

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