Derive this expression from first principles. f(R)=3/(bR)

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A: We can solve this by given information

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Q: 2L (1-сos(nn)) ппх f(x) sin dx = (пп)з (1-сos(nп)) Σ 4 f(x) = -(1 -cos(пп)) sin (пл)3 L n=1 8

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A: We can solve this using given information

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