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The output voltage of a transistor switching circuit is described by the following Fourier series: v=(2/π)∑[[((-1)^n) /n][cos(nπ/2)-1]sin(nπt/2)] (for n=1 to∞) 1. What is the amplitude of the second harmonic of this voltage? 2. What is the DC component of this voltage? 3. What is the fundamental frequency of the output

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