Approximate (by a number of terms of your choice) through the three forms of Fourier series expansion the periodic signal that in one period is given by
![1862_61af18a4-dd14-4880-87c0-38af47340ece.png](https://secure.tutorsglobe.com/CMSImages/1862_61af18a4-dd14-4880-87c0-38af47340ece.png)
Each time,
a. Plot the approximate signal in time of three periods.
b. Compute and plot the Fourier series coefficients. Moreover,
c. Plot the line spectra.
d. Compute the approximation percentage.