Abstract
This paper addresses the calculation of the extrema of the sin x/x function. First the Newton-Raphson method is used, which allows us to obtain the extrema locations very fast through the use of a recursion formula. Then a second approach is proposed, which gives the extrema locations and the extrema amplitudes in the form of series expansions. Simple, accurate algebraic expressions are derived.
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References
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Le Bihan, J. Locations and amplitudes of the extrema of the sinx/x function. Circuits Systems and Signal Process 16, 241–245 (1997). https://doi.org/10.1007/BF01183277
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DOI: https://doi.org/10.1007/BF01183277