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MIT 6.002 Circuits and Electronics, Spring 2007 9 Online
OpenStudy (anonymous):

why sinusoidal signal is always use for analysis of any system

OpenStudy (anonymous):

Because all other period waveforms can be made by combining harmonically related sine waves. So multiple sine wave analysis can always solve the problem. It may not always be the most practical or expedient way, but it will always get you there. Note this only applies to periodic waveforms.

OpenStudy (anonymous):

"gorillapilot is right" One more thing i hope you know about Fourier series, in which every wave form or signal is transformed in some functions of sine and cosine

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