題組內容
4. Considering the periodic function x(t) plotted in following Figure, 
4.1 Find the DC value ao and other Fourier coefficients
for k≠ 0 in the Fourier series representation of x(t).
4. Considering the periodic function x(t) plotted in following Figure, 
4.1 Find the DC value ao and other Fourier coefficients
for k≠ 0 in the Fourier series representation of x(t).