Hi, this question is being a pain to me can someone please help. a) Find the Fourier cosine series of for interval . b) Use it to find the sum Thanks
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Use the standard formulas:
Last edited by DeMath; October 14th 2011 at 06:46 AM. Reason: typo
wow, thanks demath, I was just thrown a bit by the absolute sign. I understand it now.
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