Question $5$: Consider the following continuous$-$time periodic signal:

a$)$ What is the period and fundamental frequency of $x(t)?$

b$)$ Find $a_s$

$[3$pt$]$

c$)$ Find $a,$ for all $k+0.$

$[3$pt$]$

$($tipt$)$

d$)$ Use the Fourier series coefficients $a,$ of $(t)$ to find the Fourier series copfficients of the following sienal:

$[6$pt$]$

$x_1(t)=x(t+2)+3\frac{dx(t)}{dr}$