申論題

4. (15%) A signal x(t) is periodic with period T0= 8. Therefore, it can be reproduced as a Fourier series:
  
The Fourier series coefficients for this representation of a particular signal x(t) are given by the integral

4.2 (5%) Using the result from part 4. 1, draw a plot of x(t) over the range of -8 ≤ t≤ 8 seconds.