An important tool in the disparate fields of physical sciences and sales forecasting , for example. Concept basis that any graph, which is the representation of a function, is composed of a near infinite series of sine and cosine functions. A system’s response to many stimuli yields complex changes is mirrored by calculating the basis of its known response to simple changes. French mathematician Jean Baptiste Joseph Fourier (1768-1830) began the concept on heat flow in 1807. Data series analysis. Known also as harmonic analysis.
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