Using Matlab code to show all steps,
The Fourier Series of a particular periodic signal is given by:
x(t)=1/2(2+3sin(1000πt)+4sin(2000πt)+π)+sin(3000πt-π/2)
Please study this series and:

i. Sketch the amplitude spectrum.

ii. Sketch the phase spectrum.

iii. Indicate where the 3rd harmonic is located on the amplitude spectrum.