Find the Fourier series to represent f(x): = edr in the interval -T < a < T. 2n(-1)" sinh aT T(a² + n?) sinh an 2a(-1)" sinh an f(x) = *COs nx+ •sin næ T(a? + n?) 2ra n=1 n=1 O i. f(2) = sinh an 2n(-1)" sinh aT 2a(-1)" sinh aT Σ •COS nx+ •sin na T(a² +n?) T(a² +n?) та n=1 n=1 O ii. f(2) = sinh an 2a(-1)" sinh ar 2n(-1)" sinh aT COS nx+ •sin na T(a² + n?) T(a² + n²) n=1 n=1 O iv. f(a) = sinh an 2a(-1)" sinh aT 2a(-1)" sinh aT •COS nx+ sin nx T(a² + n?) T(a² +n2) n=1 n=1 IM: IM: IM: iM:

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