Science aerospace engineering

I have an assignment regarding science aerospace engineering, I have to Generate a signal consists of four sinusoidal signals summed together to generate one signal. Use Fourier Transform and power spectrum density to obtain the generated signal in the frequency domain, and then find the frequency and amplitude of each signal from the frequency domain. Comment on the frequency of the random signal. You Should Deliver the following:
• Codes files.
• Data files.
• Report.