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Abstract
In this paper we introduce the application of Fourier series in Engineering. The Fourier series is a fundamental analytical tool used to represent any periodic signal as a sum of Sine and Cosine components. It transforms complex periodic functions into their frequency-domain equivalents, enabling efficient analysis of signal behaviour and harmonic content. This concept is extensively applied in various engineering fields, including electrical, electronics, mechanical, and communication engineering. By decomposing a waveform into its constituent harmonics, the Fourier series provides a clear understanding of the spectral composition of signals and supports system design, vibration analysis, and heat transfer studies.
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