📌A Fourier series is a way to represent a periodic function as a sum of simple sine and cosine waves. It breaks down complex repeating patterns into basic trigonometric components, making it easier to analyze signals in fields like engineering, physics, and music. Each term in the series corresponds to a specific frequency, showing how much of that frequency is present in the original function. This method is especially useful in signal processing, where it helps to filter, compress, or reconst

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