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I need help with the following DTFS problems for parts A and B. Thank you Prob....

I need help with the following DTFS problems for parts A and B. Thank you

Prob. 2_Discrete-Time Fourier Series (DTFs) (a) A periodic signal, z[n is shown below. Use the analysis equation to determine

(b) Sketch the magnitude spectrum, la vs. k for 100 k 105. Please note each value laJ 100 101 103 104

Prob. 2_Discrete-Time Fourier Series (DTFs) (a) A periodic signal, z[n is shown below. Use the analysis equation to determine the discrete-time Fourier Series (DTFS) coefficients, ak. Please express the ak in terms of cosines. 9-7 -5-335 7 -0.5 Clk
(b) Sketch the magnitude spectrum, la vs. k for 100 k 105. Please note each value laJ 100 101 103 104
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