Amisha posted an Question
May 20, 2021 • 03:27 am 30 points
  • CSIR NET
  • Physical Sciences

The function f(t) is a periodic function of period 21t. in the range (-t, 1), it equals e. if f(t) = ce denotes its fourier series expansion, the sum e.f is (1)

The function f(t) is a periodic function of period 21t. In the range (-T, 1), it equals e. If f(t) = ce denotes its Fourier series expansion, the sum e.f is (1) 1 (2) 2T sinh(27) (3) cosh(27) (4) ZT ZT

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  • Prashant kumar best-answer

    option b is correct

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    I know option b is correct..but how??...plzz show the solution

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