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Signals & SystemsFourier Series

For a real even periodic signal, the trigonometric Fourier series contains primarily?

  • ACosine terms
  • BSine terms only
  • CNo harmonics
  • DComplex frequencies only
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Correct Answer: A. Cosine terms
Explanation: Even symmetry eliminates sine coefficients, apart from a possible DC term.
Reference: Standard signals and systems: fourier series
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