[Part C-C3] (A) A rectangular pulse x(t) of width t= 8 msec. and amplitude A=10 V is centered at the origin in the time domain: 1- Write the mathematical expression of the signal x(t). 2- How to find...

Extracted text: [Part C-C3] (A) A rectangular pulse x(t) of width t= 8 msec. and amplitude A=10 V is centered at the origin in the time domain: 1- Write the mathematical expression of the signal x(t). 2- How to find the spectrum of x(t) by using Fourier transform or Fourier Series? Justify your answer. 3- What is the name of the resulted spectrum, and what is the benefit of finding the spectrum in general?