工程與科技 大學 約4年以前

求高手幫忙

1(35%) Determine the Fourier series representation of the periodic signal x(t) shown in Fig. 1. Plot its frequency spectrum Ck/ versus frequency 0, 020, where Ck is the Fourier series coefficient. xt (0) 20 -6 -4 -2 0 2 士 4 16 10 十-20 Fig. 1