Q.5 A continuous-time periodic signal x (t) is real valued and has a fundamental period T = 4. The nonzero Fourier series coefficients for x (t) are X [2] = X [-2] = 2, X [3] = X*[−3] = 4j Express x (t) in the form x (t) = Σ0 Ak cos(@kt + Pk).

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