Mathematics – Numerical Analysis
Scientific paper
2003-06-05
JCAAM 5 (2007) 77-88
Mathematics
Numerical Analysis
Plain TeX, 12 pages, 5 eps figures, 1 table; minimal changes; final variant to be published in Journal of Concrete and Applica
Scientific paper
We derived the formulae of central differentiation for the finding of the first and second derivatives of functions given in discrete points, with the number of points being arbitrary. The obtained formulae for the derivative calculation do not require direct construction of the interpolating polynomial. As an example of the use of the developed method we calculated the first derivative of the function having known analytical value of the derivative. The result was examined in the limiting case of infinite number of points. We studied the spectral characteristics of the weight coefficients sequence of the numerical differentiation formulae. The performed investigation enabled one to analyze the accuracy of the numerical differentiation carried out with the use of the developed technique.
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