For the signal with four harmonics (first to fourth) that can be obtained from the script, do the following:
a) Place the time domain signal for the case in which all the harmonics have amplitudeof 1.
b) Place the time domain signal for the case in which the first and third harmonics havamplitude of 3 while the others have amplitude of 2.
c) What is the fundamental frequency? Place the frequency domain signal in b).
d) Give a method to triple the fundamental frequency.