(Solved):
1. Show that a square wave with unit amplitude and frequency (refer to the fi ...
???????
1. Show that a square wave with unit amplitude and frequency (refer to the figure below) can be approximated by the following Fourier series expression: \[ x(t)=\frac{4}{\pi} \sum_{\substack{k=1 \\ \text { kis odd })}}^{\infty} \frac{1}{k} \sin (2 \pi k t) \] DO THIS using the exponential Fourier Series to derive \( X[k] \) and then converting to the compact trigonometric form. 2. What is the average power of this signal?