Question

(ii) Find the Fourier series expansion for the square wave F(t) in Figure 2. A good approximation to the steady-state response is \begin{aligned} x_{s s}(t)=& 0.053 \sin (t-0.003)+0.027 \sin (3

t-0.54)+1.02 \sin \left(5 t-\frac{\pi}{2}\right) \\ &+0.007 \sin (7 t-3.127)+\cdots \end{aligned}

Fig: 1

Fig: 2

Fig: 3

Fig: 4