Phasor representation is a mathematical technique used to simplify the analysis of sinusoidal signals by converting them from time-domain functions into the frequency domain. This transformation allows for easier manipulation of these signals, especially when dealing with linear systems, as it captures both amplitude and phase information in a compact form. Phasors are often represented as rotating vectors in the complex plane, which helps visualize the relationships between different sinusoidal sources and their interactions in circuits.
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