CTFS Time Shifting Property
If x(t) has CTFS coefficients $ a_k $ and y(t) has CTFS coefficients $ b_k $,
then the Fourier series coefficients $ b_k $ of the resulting signal y(t)=x(t-$ t_0 $)
may be expressed as $ b_k = \left ( \frac{1}{T} \right ) $
