Q: For the signal shown in fig. below: i) Classify the signal ii) Give a mathematical expression for the sketched signal f(t). iii) Find TFS for the signal i.e. ao, an, b, and f(t)= a + 2a cos(n0,t)+bsin(n0,1) iv) Calculate the RMS value from the first three harmonic of the TFS (i.e. for n=0,1,2). v) Sketch the line (magnitude and phase) spectra for the first three harmonic of the TFS (i.e. for n= 0, 1, 2). 42(1) A rz -2 -1 0 1 2 34 St