Question: ( 1 0 0 points ) This question has five parts. Answer all the parts. ( a ) ( 2 5 points ) The signal

(100 points) This question has five parts. Answer all the parts.
(a)(25 points) The signal x(t) given below is a periodic signal.
Write the equation for the signal x(t),
What is the fundamental frequency of the periodic waveform?
What is the amplitude and phase of the second harmonic frequency?
What is the ratio of the sum of the power in the first three harmonics to the total power in the signal?
( 1 0 0 points ) This question has five parts.

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