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The trigonometric Fourier series of an even function of time does not have ___________

The trigonometric Fourier series of an even function of time does not have ___________ Correct Answer The sine terms

For periodic even function, the trigonometric Fourier series does not contain the sine terms since sine terms are in odd functions. The function only has dc term and cosine terms of all harmonics. So, the sine terms are absent in the trigonometric Fourier series of an even function.

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The trigonometric Fourier series of an even function of time does not have
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