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Forums
Mathematics
General Math
Prove a series is periodic
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[QUOTE="physics1000, post: 6824222, member: 696729"] Ahh, to be honest, even when I did ## T = 2\pi## could not solve it... I tried using ##sin(a+b) = sin(a)cos(b) + sin(b)cos(a)##. regarding what PeroK just said ( what about to post, you suddenly replied, so answering it ). I dont see thought how to show it is periodic, it is periodic logically, it is sinus after all. the problem is the proof. I tried it myself also, writing the terms, but it can not be a proof, proof has to be formal, that is my problem. [/QUOTE]
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Forums
Mathematics
General Math
Prove a series is periodic
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