pls use fft() function in matlab and give two graphs,time domain and frequency graphs. ty

Part-B: Given three signals in time domain as below: Y1=15Y2=10sin(2f2t),f2=8Y3=5sin(2f3t),f3=16 Write a MATLab program that: - Plot the composite signal, G=Y1+Y2+Y3 - Use Fourier Transform function fft() in MATLab to transform G from time domain to frequency domain and plot Z=FFT(G) in frequency domain. Make your observations and explain what you see in these two plots