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I have the following function: $t(x) = e^{-j k_0 d_0}e^{-i (n-1) k_0 \frac{d_0}{2} \cos(2\pi x/\lambda))}$, which can be written in a Fourier series as $t(x) = \sum_q(C_q e^{-i q 2 \pi x/\lambda})$, where $C_q$ are the Fourier coefficients. However, I am relatively new to Fourier series and am really confused about the steps involved in this derivation. Could somebody help me out?

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    I'm having no luck with this one. Can somebody help me improve this question?2012-09-26

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