The trigonometric Fourier series of an even function does not have the
- A. DC terms
- B. Sine terms
- C. Cosine terms
- D. Odd harmonic terms
Answer: B. Sine terms
Explanation: For an even function f(−t) = f(t), the product f(t)·sin(nω0t) is an odd function, so its integral over a full period is zero, making all sine coefficients bn = 0.