Multiple choice

The Fourier series of a real periodic function has only (P) cosine terms if it is even (Q) sine terms if it is even (R) cosine terms if it is odd (S) sine terms if it is odd Which of the above statements are correct?

  1. P and S

  2. P and R

  3. Q and S

  4. Q and R
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A Correct answer
Explanation

The Fourier series of a real periodic function has only cosine terms if it is even and sine terms if it is odd.

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